telescopic rod

Abstract

The utility model discloses a telescopic rod, including the first tuber and second tuber of hollow, the opposite end of first tuber and second tuber is mutually sleeved and can slide to each other, be equipped with locking mechanism between the opposite both ends of first tuber and second tuber, the opposite both ends of first tuber and second tuber are equipped with first base and second base respectively, be equipped with pressure increasing mechanism between first base and the end of first tuber, and the pressure increasing mechanism includes movable head, and the movable head is connected in first tuber end portion slidingly, and the movable head includes first end portion and second end portion, and first end portion is located in first tuber and is towards second tuber, and one end of first end portion towards first tuber is equipped with first magnetic piece, and be equipped with elastomer between first magnetic piece and first end portion, and the inner wall of first tuber towards first end portion is equipped with the second magnetic piece with first magnetic piece forms repulsion. The utility model can adjust length through telescopic, and can stably support between two wall surfaces through pressure increasing mechanism.

Description

Technical Field

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

[0002] Telescopic clotheslines or support poles are now very common on the market. They consist of a telescopic pole body and bases at both ends of the pole body. The two bases are respectively supported against two walls. The pole body is then adjusted to a tensioned state, allowing it to be supported against the two walls via the bases. Currently, telescopic poles on the market typically consist of two sleeved tubes. A retractable limiting element is installed at the end of one tube body. The end with the limiting element is fitted into the interior of the other tube body. Then, by rotating the two tube bodies relative to each other, the limiting element changes from a retracted state to an open state. The limiting element abuts against the inner wall of the tube, thus fixing the two tubes together. When adjusting the distance between the two tubes, i.e., adjusting the length of the telescopic rod, the limiting element is changed from an open state to a closed state by rotating the two tubes in opposite directions. At this time, the limiting element makes contact, and the two tubes can move relative to each other. However, this telescopic rod structure requires placing the two bases on two walls first, and then rotating the tubes. Especially when the tension increases, continuing to rotate the tubes will interfere with the tubes, causing the bases to deviate, resulting in the telescopic rod constantly resetting and rotating, which is very inconvenient to operate. Utility Model Content

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

[0004] This utility model designs a telescopic rod, including a hollow first tube and a second tube. The opposite ends of the first and second tubes are sleeved together and can slide relative to each other. A locking mechanism is provided between the opposite ends of the first and second tubes, allowing them to be locked or in a relatively sliding state. A first base and a second base are respectively provided at opposite ends of the first and second tubes. Both the first and second bases have insertion holes for inserting the ends of the first and second tubes. A pressurizing mechanism is provided between the first base and the end of the first tube. The pressurizing mechanism includes a movable head, which is slidably connected inside the end of the first tube. The movable head includes a first end and a second end. The first end is located inside the first tube and faces the second tube. A first magnetic element is provided at the end of the first end facing the first tube. An elastic body is provided between the first magnetic element and the first end. A second magnetic element is provided on the inner wall of the first tube facing the first end, which repels the first magnetic element. When the movable head slides towards the second magnetic element along with the first magnetic element, the first magnetic element drives the second magnetic element to move away from the first magnetic element, thereby pushing the first tube to move away from the first base, so that the first tube and the second tube are in a tensioned state away from the first base, which is the first state. When the movable head slides away from the second magnetic element along with the first magnetic element, the tensioned state between the first tube and the first base is released, which is the second state. A trigger part is provided on the first base. The trigger part and the second end are coupled and hinged to the first base. The movable head switches between the first state and the second state by rotating the trigger part.

[0005] Preferably, the triggering part includes a rotating block hinged to the first base and the second end. The rotating block is provided with a driving end and a triggering end. The rotating block is rotated by rotating the driving end. The triggering end is in close contact with the second end. The end of the rotating block away from the triggering end is provided with an abutting end, which is in close contact with the first base.

[0006] Further optimization involves using a high-strength polyurethane elastic block as the elastomer.

[0007] Further optimization involves providing a through slot on the first base that communicates with the corresponding socket, allowing the drive end to move along the through slot and drive the rotating block to rotate.

[0008] Further optimization involves making both the first and second magnetic components magnets, with their opposing ends being repulsive ends.

[0009] Further optimization involves providing a guide groove within the first base to restrict movement of the abutment end.

[0010] Further optimization involves providing an anti-slip layer on the bottom surface of the guide groove.

[0011] Preferably, the locking mechanism includes a seat connected to the end of the second tube, the seat having a cavity inside, a trigger being provided in the cavity, the trigger being connected to a locking pin, a through hole communicating with the cavity being opened on the surface of the seat, the locking pin being driven by the trigger to extend and retract within the through hole, the second tube having a radial hole coaxial with the through hole and allowing the locking pin to pass through, and a plurality of linearly distributed stop holes being opened on the peripheral wall of the first tube along the axial direction, when the locking pin is in the extended state, the locking pin passes through the radial hole and extends into the stop hole to form a positioning, thereby locking the first tube and the second tube; when the locking pin is in the retracted state, the first tube and the second tube are unlocked from each other, allowing the first tube and the second tube to slide relative to each other axially.

[0012] Further optimization involves a traction rope connected to the trigger, which passes through the base and extends axially along the second tube as a force-applying end. Applying force to this end causes the trigger to drive the locking pin to extend or retract. A window communicating with the interior of the second tube is provided, through which the force-applying end of the traction rope protrudes outside the tube. The trigger includes a second slider, a second elastic element, an L-shaped swing arm, and a rotating shaft. A second groove is provided on the inner wall of the cavity, and the second slider is slidably connected to it. The locking pin is connected to the second slider and moves with it. The 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 between the locking pin and the second slider and has a notch, so that one end of the L-shaped swing arm is locked to the locking pin through the notch. The other end of the L-shaped swing arm is connected to the traction rope. The L-shaped swing arm is rotatably disposed in the cavity through the rotating shaft. By pulling the traction rope, one end of the L-shaped swing arm is pulled, so that the L-shaped swing arm rotates around the rotating shaft. The other end of the L-shaped swing arm presses down on the second slider by rotating, so that the second slider moves down against the elastic force of the second elastic element. At this time, the locking pin retracts, and the first tube and the second tube unlock each other.

[0013] Further optimization involves the base being composed of two radially halved blocks joined together. Each block has an internal cavity, which, when joined, forms a cavity. Additionally, each block has a semi-hole on its edge, which, when joined, forms a through hole.

[0014] The technical advantages of this utility model are as follows: one end of the second tube is fitted inside the first tube; a locking mechanism is provided between the two opposite ends of the first and second tubes; a first base and a second base are respectively provided at the opposite ends of the first and second tubes; a movable head is provided at the end of the first tube near the first base, the movable head is slidably connected inside the end of the first tube, and the movable head is rotatably connected to the first base; a trigger part is also coupled between the movable head and the first base, and the movable head is moved by rotating the trigger part; a first magnetic element is provided at one end of the movable head inside the first tube, and a second magnetic element is correspondingly provided inside the second tube; the second magnetic element can move together with the first tube; the faces of the first and second magnetic elements are in a state of like poles repulsion, therefore, when the movable head drives the first magnetic element to move to a distance that forms a repulsion with the second magnetic element... When the first tube and the second tube are separated, they are in a tensioned state with respect to the first base. At this time, the first tube and the second tube are supported between the two walls by the corresponding bases. When the trigger part rotates again and separates from the movable head, the second magnetic component pushes the first magnetic component to a distance beyond the repulsion distance. This releases the tension between the first tube and the second tube and the first base, making the first tube and the second tube loose with respect to the first base. At this time, the first tube and the second tube, together with the first base and the second base, can be removed from the wall. By triggering the locking mechanism, the first tube and the second tube are locked or unlocked, thus forming a telescopic rod structure. Therefore, the telescopic rod of this invention can adjust its length by telescopic extension and can be stably supported between the two walls by the pressurization mechanism. Attached Figure Description

[0015] Figure 1 This is an overall structural appearance drawing;

[0016] Figure 2 It is a sectional view of the overall structure;

[0017] Figure 3 This is an exploded view of the structure of the first tube, the second tube, and the locking mechanism;

[0018] Figure 4 This is a structural appearance diagram of the locking mechanism;

[0019] Figure 5 This is a structural cross-sectional view of the locking mechanism.

[0020] In the diagram: 1. First tube body; 2. Second tube body; 3. First base; 4. Second base; 5. Insertion hole; 6. Movable head; 7. First end; 8. Second end; 9. First magnetic component; 10. Elastic body; 11. Second magnetic component; 12. Trigger; 13. Rotating block; 14. Drive end; 15. Trigger end; 16. Abutment end; 17. Through groove; 18. Guide groove;

[0021] 19. Seat; 20. First end; 21. Groove; 22. Buckle block; 23. Second end; 24. Cavity; 25. Locking pin; 26. Through hole; 27. Radial hole; 28. Stop hole; 29. ​​Traction rope; 30. Second slider; 31. Second elastic element; 32. L-shaped swing arm; 33. Rotating shaft; 34. Second slide groove; 35. Notch; 36. Limiting groove; 37. Slot; 38. Window; 39. Pipe section; 40. Limiting protrusion. Detailed Implementation

[0022] 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.

[0023] This utility model includes a first tube 1 and a second tube 2, with opposite ends of the first tube 1 and the second tube 2 sleeved together, allowing relative sliding between them to adjust the sleeve length. A locking mechanism is provided between the opposite ends of the first tube 1 and the second tube 2 to lock them in place after length adjustment. To readjust the length, simply unlock the locking mechanism. Opposite ends of the first tube 1 and the second tube 2 are respectively provided with a first base 3 and a second base 4. The opposite surfaces of the first base 3 and the second base 4 are connected to the first tube 1 and the second tube 2, respectively. The outward-facing surfaces of the first base 3 and the second base 4 abut against a wall or cabinet surface. This allows the telescopic rod formed by the first tube 1, the second tube 2, the first base 3, and the second base 4 to be supported between two wall or cabinet surfaces.

[0024] The first base 3 and the second base 4 are each provided with insertion holes 5 for inserting the ends of the first tube 1 and the second tube 2. The first tube 1 and the second tube 2 can be round tubes or square tubes. A pressure boosting mechanism is provided between the first base 3 and the end of the first tube 1.

[0025] It should be noted that the first base 3 extends into a section 39 that is adapted to the first tube body 1. The insertion hole 5 of the first base 3 is opened on the section 39, that is, the end of the first tube body 1 is inserted into the section 39, so that the first tube body 1 can make a slight axial movement relative to the section 39.

[0026] The pressurization mechanism includes a movable head 6, which is slidably connected to the portion of the first tube 1 located within the tube segment 39. The movable head 6 and the first tube 1 can slide relative to each other, that is, the movable head 6 is sleeved inside one end of the first tube 1. The movable head 6 can reciprocate along the axial direction of the first tube 1. The movable head 6 includes a first end 7 and a second end 8, which are the two ends of the movable head 6. The first end 7 is located inside the first tube 1 and faces the second tube 2. The second end 8 extends toward the first base 3. The first end 7 is provided with a first magnetic element 9. An elastic body 10 is provided between the first magnetic element 9 and the first end 7. The inner wall of the first tube 1 facing the first end 7 is provided with a second magnetic element 11 that repels the first magnetic element 9. In order to position the second magnetic element 11, a limiting protrusion 40 extends from the inner wall of the first tube 1. The limiting protrusion 40 limits the second magnetic element 11 from both ends, so that the second magnetic element 11 can move together with the first tube 1.

[0027] In this embodiment, the second magnetic component 11 is fixed inside the second tube 2. When the movable head 6 drives the first magnetic component 9 to slide toward the second magnetic component 11, the second magnetic component 11 moves away from the first magnetic component 9 due to the repulsion between the like poles of the first magnetic component 9. The second magnetic component 11 drives the first tube 1 to move away from the first base 3, thereby making the first tube 1 and the second tube 2 in a state of mutual tension relative to the first base 3. This is the first state, in which case the entire telescopic rod is supported between the two walls and is very stable. When the movable head 6 and the first magnetic component 9 slide away from the second magnetic component 11, after the movable head 6 moves away from the first tube 1 to a certain distance, the first magnetic component 9 and the second magnetic component 11 release their repulsive relationship. This is the second state, that is, the first tube 1 and the second tube 2 are no longer in a state of tension with the first base 3, and then the entire telescopic rod can be detached from between the two walls.

[0028] The first base 3 is provided with a trigger part 12, which includes a rotating block 13 hinged to the first base 3 and the second end 8. The rotating block 13 and the second end 8 of the movable head 6 are coupled and hinged to the first base 3. The rotating block 13 is provided with a driving end 14 and a trigger end 15. The rotating block 13 is rotated by rotating the driving end 14. In this embodiment, the driving end 14 is a rod extending from the rotating block 13. The rotating block 13 is driven to rotate by rotating the rod. The rotating block 13 rotates around the coupling hinge point, thereby driving the movable head. The movable head 6 moves along the first tube 1, thus switching between the first and second states by rotating the trigger part 12. In other words, the movable head 6 is moved by driving the trigger part 12 to rotate. It should be noted that in this embodiment, the end of the rotating block 13 facing the movable head 6 is the trigger end 15, which abuts against the second end 8. The end of the rotating block 13 away from the trigger end 15 has an abutment end 16, which abuts against the first base 3. When the rotating block 13 rotates, the trigger end 15 presses against the second end 8. As the trigger end 15 continues to move downward along the surface of the second end 23, the trigger end 15 pushes the surface of the second end 23, that is, the trigger end 15 pushes the movable head 6 toward the second magnetic element 11. At the same time, the abutment end 16 moves along the inner wall of the first base 3. Both the trigger end 15 and the abutment end 16 are located on the rotating block 13. Therefore, as the rotating block 13 rotates, the trigger end 15 and the abutment end 16 rotate in opposite directions. Thus, when the trigger end 15 pushes the movable head 6 to reach the point where the first magnetic element 9 and the second magnetic element 11 form... When the repulsive distance is reached, the surface of the abutting end 16 moves to fit against the inner wall of the first base 3 to form a limit, preventing the rotating block 13 from rotating back on its own. When it needs to be restored, the rotating rod is rotated by the driving end 14, and the trigger end 15 moves upward along the second end 23 to disengage from the second end 23. At this time, the first magnetic component 9 moves towards the first base 3 under the push of the second magnetic component 11, so that the first tube 1 together with the second tube 2 and the first base 3 are no longer in a tensioned state, making it easy for the entire rod to be removed from the wall.

[0029] Furthermore, the elastomer 10 is a high-strength polyurethane elastic block, also known as a PU block. As a high-load elastic material, its hardness can reach Shore DD, and its compressive strength is much higher than that of ordinary rubber. It can withstand high pressure and has a high deformation recovery rate. It is wear-resistant and tear-resistant, making it suitable for medium-to-high load compression requirements. Therefore, it provides a certain degree of elastic buffering when switching between the first and second states.

[0030] Furthermore, the first base 3 has a through groove 17 that communicates with the corresponding insertion hole 5. The drive end 14 can move along the through groove 17. In this embodiment, the drive end 14 can be manually rotated to move up or down, that is, the rod body, to drive the rotating block 13 to rotate.

[0031] Furthermore, both the first magnetic element 9 and the second magnetic element 11 are magnets, and their opposite ends are repulsive ends.

[0032] Furthermore, the first base 3 is provided with a guide groove 18 for restricting the movement of the abutment end 16. The bottom surface of the guide groove 18 is provided with an anti-slip layer, such as a rubber layer, so that the static friction is increased after the surface where the abutment end 16 is located is in contact with the inner wall of the first base 3, preventing the abutment end 16 from sliding along the inner wall of the first base 3.

[0033] Furthermore, the locking mechanism includes a seat 19 connected to the end of the second tube 2. The seat 19 has a cavity 24 inside, and a trigger is provided in the cavity 24. The trigger is connected to a locking pin 25. A through hole 26 communicating with the cavity 24 is opened on the surface of the seat 19. The locking pin 25 is driven by the trigger to extend and retract in the through hole 26. The second tube 2 has a radial hole 27 coaxial with the through hole 26 and allowing the locking pin 25 to pass through. The peripheral wall of the first tube 1 has a plurality of linearly distributed stop holes 28 along the axial direction. That is, when the locking pin 25 is in the extended state, the locking pin 25 passes through the radial hole 27 and extends into the stop hole 28 to form a position, thereby locking the first tube 1 and the second tube 2. When the locking pin 25 is in the retracted state, the first tube 1 and the second tube 2 are unlocked from each other, so that the first tube 1 and the second tube 2 can slide relative to each other axially.

[0034] The triggering element includes a second slider 30, a second elastic element 31, an L-shaped swing arm 32, and a rotating shaft 33. A second groove 34 is formed in the inner wall of the cavity 24. The second slider 30 is slidably connected to the second groove 34, and the sliding direction of the second slider 30 is the same as that of the first slider. A locking pin 25 is connected to the second slider 30 and moves with it. The second elastic element 31 is disposed between the second slider 30 and the inner wall of the cavity 24. One end of the L-shaped swing arm 32 extends to the connection point between the locking pin 25 and the second slider 30. A notch 35 is provided on one end of the L-shaped swing arm 32. At this time, one end of the L-shaped swing arm 32 is located between the second slider 30 and the inner wall of the cavity 24, causing the notch 35 to engage. The other end of the L-shaped swing arm 32 is connected to the traction rope 29 and is fastened to the locking pin 25. The rotating shaft 33 is set in the cavity 24. The L-shaped swing arm 32 has a hole, and the rotating shaft 33 passes through the hole of the L-shaped swing arm 32, so that the L-shaped swing arm 32 can rotate around the rotating shaft 33. When one end of the L-shaped swing arm 32 is pulled by pulling the traction rope 29, the L-shaped swing arm 32 rotates around the rotating shaft 33. The end of the L-shaped swing arm 32 with the notch 35 forms a downward action by rotating, thereby pressing down the second slider 30. The second slider 30 moves down against the elastic force of the second elastic element 31. At this time, the locking pin 25 retracts, and the first tube 1 and the second tube 2 unlock each other.

[0035] A traction rope 29 is connected to the trigger. The traction rope 29 passes through the seat 19 and extends along the axis of the second tube 2 to serve as the force-applying end. By applying force to the force-applying end, that is, pulling the traction rope 29, the trigger drives the locking pin 25 to perform a telescopic action. A window 38 communicating with the interior of the second tube 2 is provided. The force-applying end of the traction rope 29 passes through the window 38 and protrudes outside the second tube 2, making it easy to pull the force-applying end.

[0036] In summary, the locking pin 25 is in a normally extended state under the action of the corresponding elastic element, which means that the second tube 2 and the first tube 1 are in a locked state. That is, the second tube 2 and the first tube 1 are in a locked state under normal conditions. When the traction rope 29 is pulled, the traction rope 29 pulls the trigger, which causes the locking pin 25 to retract, so that the locking pin 25 disengages from the stop hole 28. In this way, the second tube 2 and the first tube 1 are in an unlocked state, so that the second tube 2 and the first tube 1 can slide between each other, thereby allowing the length of the telescopic rod to be adjusted. During the relative sliding process of the second tube 2 and the first tube 1, the traction rope 29 must always be in the state of pulling the trigger until the first tube 1 and the second tube 2 slide to the preset position and then the traction rope 29 is released, so that the locking pin 25 extends into the corresponding stop hole 28 to form a lock.

[0037] Alternatively, a button structure can be installed on the second tube 2, with the traction rope 29 extending to one end of the second tube 2 and connected to the button structure to form a linkage. Pressing the button structure will pull the traction rope 29. The button structure is a conventional structure and will not be described in detail here.

[0038] In addition, in this embodiment, both the second tube 2 and the first tube 1 are circular tube structures. The second tube 2 and the first tube 1 are provided with axially extending limiting grooves 36 on the side where the locking pin 25 is located. The radial hole 27 and the stop hole 28 are both located in the corresponding limiting grooves 36, so that the locking pin 25 is hidden in the limiting grooves 36 and will not interfere with the sleeve connection between the second tube 2 and the first tube 1. At the same time, a radial limit is formed between the second tube 2 and the first tube 1 to prevent the second tube 2 and the first tube 1 from rotating relative to each other.

[0039] Furthermore, the seat 19 includes a first end 20 and a second end 23. The outer diameter of the first end 20 is smaller than the outer diameter of the second end 23. The second tube 2 is sleeved on the first end 20, and the first tube 1 is sleeved on the second end 23 and the second tube 2.

[0040] Furthermore, the outer peripheral wall of the first end 20 is provided with symmetrically distributed grooves 21, and the inner wall of the grooves 21 extends out with elastically deformable snap-fit ​​blocks 22. In this embodiment, the base 19 is made of plastic, so the snap-fit ​​blocks 22 are also made of plastic. One end of the snap-fit ​​blocks 22 is integrally connected to the inner wall of the grooves 21, and the other end is suspended, thus forming snap-fit ​​blocks 22 with elastic deformation. The peripheral wall of the second tube 2 is provided with a slot 37. After the second tube 2 is sleeved with the first end 20, the snap-fit ​​blocks 22 are snapped into the slot 37 to form a limit, so that the first end 20 and the second tube 2 form a detachable fixed connection with each other. This not only has a simple structure, but also facilitates loading and unloading.

[0041] Furthermore, the base 19 is composed of two blocks that are radially halved, that is, the cylindrical base 19 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. It should be noted that the cavity is divided into independent cavities by guide ribs, which are used to position and install the various components of the trigger. Both blocks have half holes on their edges, and the half holes of the two blocks are joined together to form a through hole 26.

[0042] Therefore, the locking mechanism realizes the adjustment of the relative distance between the first tube 1 and the second tube 2, that is, it realizes the telescopic rod's telescopic function. The usage process of this utility model is as follows: first, unlock the locking mechanism to adjust the length between the first tube 1 and the second tube 2, and then lock the first tube 1 and the second tube 2 through the locking mechanism to prevent the first tube 1 and the second tube 2 from moving relative to each other. Then, place the two tubes between the two walls through the first base 3 and the second base 4, with the first base 3 and the second base 4 respectively attached to the two walls. Then, through the drive trigger part 12, the first tube 1 and the second tube 2 are tensioned so that the entire rod can be firmly supported between the two walls.

[0043] 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, characterized in that, The device includes a hollow first tube (1) and a second tube (2). The opposite ends of the first tube (1) and the second tube (2) are sleeved together and can slide relative to each other. A locking mechanism is provided between the opposite ends of the first tube (1) and the second tube (2) to form a locked or relatively sliding state between the first tube (1) and the second tube (2). The opposite ends of the first tube (1) and the second tube (2) are respectively provided with a first base (3) and a second base (4). Both the first base (3) and the second base (4) are provided with a first base for the first tube. Insertion holes (5) are inserted into the ends of the tube body (1) and the second tube body (2). A pressurizing mechanism is provided between the first base (3) and the end of the first tube body (1). The pressurizing mechanism includes a movable head (6), which is slidably connected inside the end of the first tube body (1). The movable head (6) includes a first end (7) and a second end (8). The first end (7) is located inside the first tube body (1) and faces the second tube body (2). A first magnetic element (9) is provided at the end of the first end (7) facing the first tube body (1). An elastic body (10) is provided between the first tube body (1) and the first end (7). A second magnetic element (11) is provided on the inner wall of the first tube body (1) facing the first end (7) to repel the first magnetic element (9). When the movable head (6) slides together with the first magnetic element (9) toward the second magnetic element (11), the first magnetic element (9) drives the second magnetic element (11) to move away from the first magnetic element (9), thereby pushing the first tube body (1) to move away from the first base (3), so that the first tube body (1) together with the second tube body (2) and the first base (3) are in a tensioned state that is far apart from each other, which is the first state; when the movable head (6) and the first magnetic element (9) slide away from the second magnetic element (11), the first tube (1) and the second tube (2) are released from the tensioned state with the first base (3), which is the second state; the first base (3) is provided with a trigger part (12), and the trigger part (12) and the second end (8) are coupled and hinged to the first base (3). The movable head (6) is switched between the first state and the second state by rotating the trigger part (12).

2. The telescopic rod according to claim 1, characterized in that, The triggering part (12) includes a rotating block (13) hinged to the first base (3) and the second end (8). The rotating block (13) is provided with a driving end (14) and a triggering end (15). The rotating block (13) is rotated by rotating the driving end (14). The triggering end (15) is in close contact with the second end (8). The end of the rotating block (13) away from the triggering end (15) is provided with an abutting end (16). The abutting end (16) is in close contact with the first base (3).

3. The telescopic rod according to claim 2, characterized in that, The elastomer (10) is a high-strength polyurethane elastic block.

4. The telescopic rod according to claim 2, characterized in that, The first base (3) has a through groove (17) that communicates with the corresponding insertion hole (5). The drive end (14) can move along the through groove (17) and drive the rotating block (13) to rotate by driving the drive end (14).

5. The telescopic rod according to claim 2, characterized in that, The first magnetic element (9) and the second magnetic element (11) are both magnets, and their opposite ends are repulsive ends.

6. The telescopic rod according to claim 4, characterized in that, The first base (3) is provided with a guide groove (18) for restricting the movement of the abutment end (16).

7. The telescopic rod according to claim 6, characterized in that, The bottom surface of the guide groove (18) is provided with an anti-slip layer.

8. The telescopic rod according to claim 1, characterized in that, The locking mechanism includes a seat (19) connected to the end of the second tube (2). The seat (19) has a cavity inside, and a trigger is provided inside the cavity. The trigger is connected to a locking pin (25). A through hole (26) communicating with the cavity is opened on the surface of the seat (19). The locking pin (25) is driven by the trigger to extend and retract in the through hole (26). The second tube (2) has a radial hole (27) coaxial with the through hole (26) for the locking pin (25) to pass through. The peripheral wall of the first tube (1) has a plurality of linearly distributed stop holes (28) along the axial direction. When the locking pin (25) is in the extended state, the locking pin (25) passes through the radial hole (27) and extends into the stop hole (28) to form a positioning, thereby locking the first tube (1) and the second tube (2); when the locking pin (25) is in the retracted state, the first tube (1) and the second tube (2) are unlocked from each other, so that the first tube (1) and the second tube (2) can slide relative to each other axially.

9. The telescopic rod according to claim 8, characterized in that, A traction rope (29) is connected to the trigger. The traction rope (29) passes through the seat (19) and extends along the axial direction of the second tube (2) as a force-applying end. By applying force to the force-applying end, the trigger drives the locking pin (25) to extend and retract. A window (38) communicating with the interior of the second tube (2) is provided. The force-applying end of the traction rope (29) passes through the window (38) and protrudes outside the second tube (2). The triggering element includes a second slider (30), a second elastic element (31), an L-shaped swing arm (32), and a rotating shaft (33). A second groove (34) is provided on the inner wall of the cavity. The second slider (30) is slidably connected to the second groove (34). The locking pin (25) is connected to the second slider (30) and moves with it. The second elastic element (31) is disposed between the second slider (30) and the inner wall of the cavity. One end of the L-shaped swing arm (32) extends to the connection point between the locking pin (25) and the second slider (30) and has a notch (35) so that one end of the L-shaped swing arm (32) is engaged with the locking pin (25) through the notch (35). The other end of the L-shaped swing arm (32) is connected to a traction rope (29). The L-shaped swing arm (32) is rotatably disposed within the cavity via the rotating shaft (33). By pulling the traction rope (29), one end of the L-shaped swing arm (32) is pulled, causing the L-shaped swing arm (32) to rotate around the rotation axis (33). The other end of the L-shaped swing arm (32) is rotated and presses down on the second slider (30), causing the second slider (30) to move down against the elastic force of the second elastic element (31). At this time, the locking pin (25) retracts, and the first tube (1) and the second tube (2) unlock each other.

10. The telescopic rod according to claim 9, characterized in that, The base (19) is composed of two blocks that are radially halved and spliced ​​together. Each of the two blocks has a cavity inside, and the cavities of the two blocks are spliced ​​together to form a cavity. Each of the two blocks has a half hole on its edge, and the half holes of the two blocks are spliced ​​together to form a through hole (26).

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