New telescopic pole

Abstract

A novel telescopic rod, characterized in that it comprises an inner tube (1) and an outer tube (2) coaxially mounted outside the inner tube (1), wherein a locking mechanism is provided between the inner tube (1) and the outer tube (2), wherein the locking mechanism comprises a seat body (3) connected to an end portion of the inner tube (1), wherein a chamber (4) is formed within the seat body (3), wherein the chamber (4) is provided with a trigger element, wherein the trigger element is connected to a locking pin (5), wherein the seat body (3) is provided on one surface with a through hole (6) connected to the chamber (4), wherein the locking pin (5) is driven by the trigger element to expand and retract in the through hole (6), wherein the inner tube (1) is provided with a radial hole (7),which is coaxial with the through-hole (6) and serves for the passage of the locking pin (5), and wherein a plurality of stop holes (8) which are linearly distributed are provided along an axial direction and around a peripheral wall of the outer tube (2), wherein, when the locking pin (5) is in an extended state, the locking pin (5) passes through the radial hole (7) and then extends into the stop hole (8) to form a positioning for locking the outer tube (2) and the inner tube (1), and while, when the locking pin (5) is in a retracted state, the outer tube (2) and the inner tube (1) are unlocked from each other so that the outer tube (2) and the inner tube (1) can slide relative to each other in an axial direction.

Description

Technical FieldThe present invention relates to the technical field of telescopic rod, in particular to a novel telescopic rod.Prior ArtManual telescopic rod has a wide range of applications, for example for curtain rods and door curtain rods, etc. The two rod elements are placed on top of each other and form a relative sliding movement, and a locking mechanism is provided between the two rod elements. When the two rod members are extended or retracted, they are locked by the locking mechanism to realize the telescopic function of the telescopic rod. The locking structure of the telescopic rods currently on the market is usually complicated in structure which not only increases the manufacturing cost but also heavy in weight and is not light enough.Disclosure of the ApplicationThe purpose of the present invention is to provide a novel telescopic rod to solve the above technical problems.The present utility model develops a novel telescopic rod comprising an inner tube and an outer tube that is placed coaxially outside the inner tube, wherein a locking mechanism is provided between the inner tube and the outer tube, wherein the locking mechanism comprises a seat body connected to an end portion of the inner tube, wherein a chamber is formed inside the seat body, wherein the chamber is provided with a trigger member, wherein the trigger member is connected to a locking pin, wherein the seat body is provided on a surface with a through hole connected to the chamber, wherein the locking pin is driven by the trigger member to expand and retract in the through hole, wherein the inner tube is provided with a radial hole that is coaxial with the through hole and serves for passage of the locking pin, and wherein a plurality of stopper holes, the lock pins are linearly distributed along an axial direction and around a circumferential wall of the outer tube, wherein when the lock pin is in an expanded state, the lock pin passes through the radial hole and then extends into the stopper hole to form a positioning to lock the outer tube and the inner tube, and while when the lock pin is in a retracted state, the outer tube and the inner tube are unlocked from each other so that the outer tube and the inner tube can slide relative to each other in an axial direction.Preferably, the trigger member is connected to a pull cord, wherein the pull cord extends along an axial direction of the inner tube after passing through the seat body to serve as a force applying end, and wherein the trigger member drives the lock pin by force applying to the force applying end to perform an extension and retraction operation.As a further optimisation, the trigger element comprises a first sliding block, a first elastic element, a rotating arm and a first guide column, wherein a first sliding groove is formed on an inner wall of the chamber, wherein the first sliding block is slidably connected to the first sliding groove, wherein the locking pin is connected to the first sliding block and moves with the first sliding block, wherein the first elastic element is provided between the first sliding block and the inner wall of the chamber, wherein one end of the rotating arm is rotatably connected to the chamber by a rotation axis while the other end of the rotating arm as a suspension end contacts the first sliding block, wherein the first guide column is provided inside the chamber and is located below the rotating arm, wherein one end of the traction cable is connected to the rotating arm, while the other end of the pull cable is guided around the first guide column and extends along the inner tube after passing through the seat body, wherein the rotating arm is driven into a rotating movement by pulling the pull cable, wherein the suspension end of the rotating arm presses down onto the first sliding block by rotating, such that the first sliding block overcomes the elasticity of the first elastic element and moves down, wherein the locking pin retracts, and wherein the outer tube and the inner tube are unlocked from each other.As a further optimization, the trigger member includes a second slide block, a second elastic member, an L-shaped pendulum arm, and a rotating shaft, a second slide groove formed on the inner wall of the chamber, the second slide block being slidably connected to the second slide groove, the lock pin being connected to the second slide block and moving with the second slide block, the second elastic member being provided between the second slide block and the inner wall of the chamber, an end of the L-shaped pendulum arm extending to the connection point between the lock pin and the second slide block and provided with an opening such that an end of the L-shaped pendulum arm is pinched by the opening in the lock pin, while the other end of the L-shaped swing arm is connected to the pull cable, and the L-shaped swing arm is rotatably provided inside the chamber through the rotating shaft, one end of the L-shaped swing arm is pulled by pulling the pull cable, so that the L-shaped swing arm rotates about the rotating shaft, while the other end of the L-shaped swing arm presses down the second slide block by rotating, so that the second slide block overcomes the elasticity of the second elastic member and moves down, the lock pin retracts, and the outer tube and the inner tube are unlocked from each other.Preferably, the seat body includes a first end and a second end, wherein a size of an outer diameter of the first end is smaller than a size of an outer diameter of the second end, wherein the inner tube is fitted on the first end, and wherein the outer tube is fitted on the second end and outside the inner tube.As a further optimization, recesses symmetrically distributed are formed on an outer peripheral wall of the first end, a snap block elastically deformed extending from an inner wall of the recess, and a snap groove provided on a peripheral wall of the inner tube, wherein after the inner tube is fitted on the first end, the snap block snaps into the snap groove to form a boundary for fixing the first end and the inner tube to each other.As a further optimisation, the seat body consists of two block bodies assembled in radial halves, the two block bodies being provided with hollows inside; the hollows of the two block bodies being connected to each other to form the chamber, the edges of the two block bodies being provided with half holes, and the half holes of the two block bodies being connected to each other to form the through hole.The present utility model has the following advantageous effects: the inner tube and the outer tube are fitted on each other, a locking mechanism is provided at an end portion where the inner tube is inserted into the outer tube, and the outer tube is provided with a stopper hole, the locking mechanism includes a seat body, the seat body is provided with a telescopic locking pin, a trigger member is provided inside the seat body to drive the locking pin to an extension and retraction operation, one end of the pull cord is connected to the trigger member while the other end of the pull cord, after passing through the seat body, extends along an axial direction of the inner tube to serve as a force applying end, and the trigger member is driven by the driving on the pull cord, whereby the trigger member drives the locking pin, to perform an expansion and withdrawal operation,In the initial state, the lock pin is in a normally extended state, and the lock pin extends into the stopper hole, whereby the inner tube and the outer tube form a lock. When the pull cable is pulled, the pull cable drives the trigger, the trigger drives the lock pin to retract, the lock pin disengages from the stop hole, and thereby the inner tube and the outer tube form a latch. At this time, the inner tube and the outer tube may slide relative to each other to achieve the purpose of length adjustment, and when the preset length is adjusted, the lock pin may extend into the corresponding stopper hole to form a lock. Therefore, the present invention has not only a simple and easy-to-implement structure but also good stability.DISCLOSUREFIG. 1 is an exploded view of the overall structure of the present invention; FIG. 2 is a structural view of the seat body of the present invention; FIG. 3 is a structural sectional view of the trigger member according to Embodiment 1; FIG. 4 is a structural sectional view of the trigger member according to Embodiment 1.List of reference numerals: 1. inner tube; 2. outer tube; 3. seat body; 3-1. first end; 3-2. Recess; 3-3. Snap block; 3-4. second end; 4, chamber; 5. locking pin; 6. through hole; 7. radial hole; 8. stop hole; 9. pull rope; 10. first slide block; 11. first elastic member; 12. rotating arm; 13. first guide column; 14. first slide groove; 15. second slide block; 16. second elastic member; 17, L-shaped swing arm; 18. rotating shaft; 19. second slide groove; 20. opening; 34. snap groove; 35. limiting groove.Specific EmbodimentsEmbodiment 1The present invention includes an inner tube 1 and an outer tube 2 which is coaxially set outside the inner tube, a locking mechanism is provided between the inner tube 1 and the outer tube 2, the locking mechanism for locking or unlocking the inner tube 1 and the outer tube 2, when the locking mechanism is in an unlocked state, the inner tube and the outer tube can slide relative to each other to achieve length adjustment while the locking mechanism is in a locked state, the inner tube 1 and the outer tube 2 form a lock.The locking mechanism comprises a seat body 3 connected to an end portion of the inner tube 1, a chamber 4 is formed inside the seat body 3, the chamber 4 is provided with a trigger member, the trigger member is connected to a locking pin 5, the seat body 3 is provided on one surface with a through hole 6 connected to the chamber 4, the locking pin 5 is driven by the trigger member to expand and retract in the through hole 6, the inner tube 1 is provided with a radial hole 7 coaxial with the through hole 6 and for passing the locking pin 5, and a plurality of stopper holes 8 linearly distributed are provided along an axial direction and around a circumferential wall of the outer tube 2, that is, that is, when the lock pin 5 is in an expanded state, the lock pin 5 passes through the radial hole 7 and then extends into the stopper hole 8 to form a positioning to lock the outer tube 2 and the inner tube 1, and while when the lock pin 5 is in a retracted state, the outer tube 2 and the inner tube 1 are unlocked from each other so that the outer tube 2 and the inner tube 1 can slide relative to each other in an axial direction.The trigger member is connected to a pull cord 9, the pull cord 9 extends along an axial direction of the inner tube 1 after passing through the seat body 3 to serve as a force-exerting end, and the trigger member drives the lock pin 5 by force-exerting the force-exerting end to perform an extension and retraction operation.In this embodiment, the trigger member comprises a first slide block 10, a first elastic member 11, a rotating arm 12 and a first guide column 13, a first slide groove 14 formed on an inner wall of the chamber 4, the first slide block 10 being slidably connected to the first slide groove 14, the lock pin 5 being connected to the first slide block 10 and moving with the first slide block 10, the sliding direction of the first slide block 10 being radial to the inner tube 1, the first elastic member 11 being provided between the first slide block 10 and the inner wall of the chamber 4, one end of the rotating arm 12 being rotatably connected to the chamber 4 by a rotation axis while the other end of the rotating arm 12 as a hanging end contacts the first slide block 10, wherein the first guide column 13 is provided inside the chamber 4 and is located below the rotating arm 12, extends, one end of the pull cable 9 is connected to the rotating arm 12, while the other end of the pull cable 9 is guided around the first guide column 13 and extends along the inner tube 1 after passing through the seat body 3, the first guide column 13 serving for guiding and changing the direction of the pull cable 9, wherein the rotating arm 12 is driven into a rotational movement by pulling the pull cable 9, wherein the rotating arm 12 rotates around the rotational axis, wherein the suspension end of the rotating arm 12 performs a downward pressing operation by rotation, wherein the rotating arm 12 presses down on the first sliding block 10, such that the first sliding block 10 overcomes the elasticity of the first elastic member 11 and moves in a radial direction, whereby the lock pin 5 retracts, such that the lock pin 5 disengages from the stopper hole 8, and the outer tube 2 and the inner tube 1 are unlocked from each other.Further, the seat body 3 includes a first end 3- 1 and a second end 3- 4, wherein the size of an outer diameter of the first end 3- 1 is smaller than the size of an outer diameter of the second end 3- 4, wherein the inner tube 1 is fitted on the first end 3- 1, and wherein the outer tube 2 is fitted on the second end 3- 4 and outside the inner tube 1.Further, recesses 3- 2 symmetrically distributed are formed on an outer circumferential wall of the first end 3- 1, and a snap block 3- 3 elastically deformed extends from an inner wall of the recess 3- 3. In this embodiment, the seat body 3 takes a resin structure, so that the snap block 3-3 is also a resin structure, one end of which is integrally connected to the inner wall of the recess 3-2 and the other end of which is in a hanging state, so that a snap block 3-3 having elastic deformation is formed. A snap groove 34 is provided on a peripheral wall of the inner tube 1, and after the inner tube 1 is fitted on the first end 3-1, the snap block 3-3 snaps into the snap groove 34 to form a boundary, so that the first end 3-1 and the inner tube 1 form a detachable fixed connection with each other, which not only has a simple structure but is also easily loaded and unloaded.Further, the seat body 3 is composed of two block bodies joined together in radial halves, that is, the cylindrical seat body 3 is divided into two halves along an axial cross section. The two block bodies are provided with cavities inside, the cavities of the two block bodies being connected to each other to form the chamber 4, it should be noted that the chamber 4 is divided by guide ribs into individual chambers 4 which serve for positioning and fastening the components of the trigger element. The edges of the two block bodies are provided with half holes, and the half holes of the two block bodies are connected to each other to form the through hole 6.Embodiment 2The basic structure of this embodiment is similar to that of the first embodiment, and the difference lies in the structure of the trigger member. The trigger member according to this embodiment includes a second slide block 15, a second elastic member 16, an L-shaped pendulum arm 17 and a rotating shaft 18, a second slide groove 19 formed on the inner wall of the chamber 4, the second slide block 15 being slidably connected to the second slide groove 19, the second slide block 15 sliding in the same direction as the first slide block 10, the lock pin 5 being connected to the second slide block 15 and moving with the second slide block 15, the second elastic member 16 being provided between the second slide block 15 and the inner wall of the chamber 4, one end of the L-shaped pendulum arm 17 extending to the connection point between the lock pin 5 and the second slide block 15, wherein one end of the L-shaped swing arm 17 is provided with an opening 20. At the same time, one end of the L-shaped swing arm 17 is located between the second slide block 15 and the inner wall of the chamber 4, so that one end of the L-shaped swing arm 17 is clamped through the opening 20 in the lock pin 5. The other end of the L-shaped swing arm 17 is connected to the pull rope 9, and the rotation shaft 18 is provided inside the chamber 4, the L-shaped swing arm 17 is provided with a hole, and the rotation shaft 18 passes through the hole of the L-shaped swing arm 17 so that the L-shaped swing arm 17 can rotate about the rotation shaft 15. In this way, when one end of the L-shaped swing arm 17 is pulled by pulling the pull rope 9, the L-shaped swing arm 17 rotates about the rotation shaft 18, one end of the L-shaped swing arm 17 provided with the opening 20 performs a downward pressing operation by rotation to press the second slide block 15 downward, so that the second slide block 15 overcomes the elasticity of the second elastic member 16 and moves downward, retracting the lock pin 5, and unlocking the outer tube 2 and the inner tube 1 from each other.The above embodiments thus provide an example of the structure of two trip elements. Note that the lock pin 5 is in a normally expanded state under the action of the corresponding elastic member, i.e., the inner tube 1 and the outer tube 2 are in a locked state, i.e., the inner tube 1 and the outer tube 2 are in a locked state in a conventional manner. When the pull cable is pulled, the pull cable drives the trigger, the trigger drives the lock pin to retract, the lock pin disengages from the stop hole, and thereby the inner tube and the outer tube form a latch. While the inner tube and the outer tube slide relative to each other, the pull cable 9 needs to remain in the state in which the trigger member is pulled, and only until the outer tube 2 and the inner tube 1 slide to a preset position, the pull cable 9 may then be released, whereby the locking pin may extend into the corresponding stopper hole to form a lock.Note that a knob structure may be provided on the inner tube 1, and that an end of the pull cable 9 extending to the inner tube 1 is connected to the knob structure to form a coupling, and that the pull cable 9 is pulled by pressing the knob structure. The button structure is a conventional structure and will not be described here.The first elastic element 11 and the second elastic element 16 take on springs.Moreover, the inner tube 1 and the outer tube 2 take a round tube structure, and the inner tube 1 and the outer tube 2 are provided with a limiting groove 35 extending in a radial direction on the side where the lock pin 5 is located, and the radial hole 7 and the stopper hole 8 are located in the corresponding limiting grooves 35, so that the lock pin 5 can be hidden in the limiting grooves 35 and does not interfere with the fitting connection between the inner tube 1 and the outer tube 2. At the same time, a radial boundary is formed between the inner tube 1 and the outer tube 2, which boundary prevents a relative rotation between the inner tube 1 and the outer tube 2.The present utility model is not limited to the above-described best mode, and each person can derive various other forms of products under the inspiration of the present utility model, but regardless of all changes in its form or structure, each product falls within the scope of the present utility model with the same or similar technical solutions as those of the present application.

Claims

A novel telescopic rod characterized by comprising an inner tube (1) and an outer tube (2) coaxially seated outside the inner tube (1), wherein a locking mechanism is provided between the inner tube (1) and the outer tube (2), the locking mechanism comprising a seat body (3) connected to an end portion of the inner tube (1), wherein a chamber (4) is formed inside the seat body (3), wherein the chamber (4) is provided with a trigger member, wherein the trigger member is connected to a locking pin (5), wherein the seat body (3) is provided on a surface with a through hole (6) connected to the chamber (4), wherein the locking pin (5) is driven by the trigger member to expand and retract in the through hole (6), wherein the inner tube (1) is provided with a radial hole (7) coaxial with the through hole (6) and for passing the lock pin (5), and wherein a plurality of stopper holes (8) linearly distributed are provided along an axial direction and around a circumferential wall of the outer tube (2), wherein when the lock pin (5) is in an expanded state, the lock pin (5) passes through the radial hole (7) and then extends into the stopper hole (8) to form a positioning to lock the outer tube (2) and the inner tube (1), and while when the lock pin (5) is in a retracted state, the outer tube (2) and the inner tube (1) are unlocked from each other so that the outer tube (2) and the inner tube (1) can slide relative to each other in an axial direction.The novel telescopic rod according to claim 1, characterized in that the trigger member is connected to a pull cord (9), wherein the pull cord (9) extends along an axial direction of the inner tube (1) after passing through the seat body (3) to serve as a force applying end, and wherein the trigger member drives the lock pin (5) to perform an extension and retraction operation by force applying to the force applying end.The novel telescopic rod according to claim 2, characterized in that the trigger member comprises a first slide block (10), a first elastic member (11), a rotating arm (12), and a first guide column (13), a first slide groove (14) being formed on an inner wall of the chamber (4), the first slide block (10) being slidably connected to the first slide groove (14), the lock pin (5) being connected to the first slide block (10) and moving with the first slide block (10), the first elastic member (11) being provided between the first slide block (10) and the inner wall of the chamber (4), one end of the rotating arm (12) being rotatably connected to the chamber (4) through a rotation axis while the other end of the rotating arm (12) as a hanging end contacts the first slide block (10), wherein the first guide column (13) is provided inside the chamber (4) and is located below the rotating arm (12), wherein one end of the pull cable (9) is connected to the rotating arm (12), while the other end of the pull cable (9) is guided around the first guide column (13) and extends along the inner tube (1) after passing through the seat body (3), wherein the rotating arm (12) is driven into a rotating movement by pulling the pull cable (9), wherein the suspension end of the rotating arm (12) presses down on the first sliding block (10) by rotation, such that the first sliding block (10) overcomes the elasticity of the first elastic element (11) and moves down, wherein the locking pin (5) retracts and wherein the outer tube (2) and the inner tube (1) are unlocked from each other.A novel telescopic rod according to claim 2, characterized in that the trigger element comprises a second slide block (15), a second elastic element (16), an L-shaped pendulum arm (17) and a rotating shaft (18), a second slide groove (19) being formed on the inner wall of the chamber (4), the second slide block (15) being slidably connected to the second slide groove (19), the locking pin (5) being connected to the second slide block (15) and moving with the second slide block (15), the second elastic element (16) being provided between the second slide block (15) and the inner wall of the chamber (4), an end of the L-shaped pendulum arm (17) extending to the connection point between the locking pin (5) and the second slide block (15) and being provided with an opening (20), such that one end of the L-shaped pendulum arm (17) is clamped by the opening (20) in the locking pin (5) while the other end of the L-shaped pendulum arm (17) is connected to the pull cable (9), and the L-shaped pendulum arm (17) is rotatably provided inside the chamber (4) by the rotating shaft (18), wherein one end of the L-shaped pendulum arm (17) is pulled by pulling the pull cable (9) such that the L-shaped pendulum arm (17) rotates about the rotating shaft (18) while the other end of the L-shaped pendulum arm (17) presses down on the second slide block (15) by rotating such that the second slide block (15) overcomes the elasticity of the second elastic member (16) and moves down, wherein the locking pin (5) retracts and wherein the outer tube (2) and the inner tube (1) are unlocked from each other.The novel telescopic rod according to claim 1, characterized in that the seat body (3) comprises a first end (3-1) and a second end (3-4), wherein the size of an outer diameter of the first end (3-1) is smaller than the size of an outer diameter of the second end (3-4), wherein the inner tube (1) is fitted on the first end (3-1), and wherein the outer tube (2) is fitted on the second end (3-4) and outside the inner tube (1).The novel telescopic rod according to claim 5, characterized in that recesses (3-2) which are symmetrically distributed are formed on an outer circumferential wall of the first end (3-1), a snap block (3-3) having elastic deformation extends from an inner wall of the recess (3-3), and a snap groove (34) is provided on a circumferential wall of the inner tube (1), wherein after the inner tube (1) is fitted on the first end (3-1), the snap block (3-3) snaps into the snap groove (34) to form a boundary for fixing the first end (3-1) and the inner tube (1) to each other.Novel telescopic rod according to claim 5, characterized in that the seat body (3) consists of two block bodies assembled in radial halves, the two block bodies being provided with hollows inside; the hollows of the two block bodies being connected to each other to form the chamber (4), the edges of the two block bodies being provided with half holes, and the half holes of the two block bodies being connected to each other to form the through hole (6).

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