One-key locking telescopic rod with multiple sections

Abstract

The utility model relates to a telescopic rod of one-key locking multi-section pipe, including telescopic pipe body of inner tube, middle tube and outer tube are successively sleeved, and locking mechanism is used for locking each pipe section of telescopic pipe body, locking mechanism includes the upper lock structure for locking and loosening the joint of inner tube and middle tube, the lower lock structure for locking and loosening the joint of middle tube and outer tube, the transmission bar for transmitting the kinetic energy of the locking action of upper lock structure and controlling the locking and loosening action of lower lock structure, the utility model has the advantages of: the kinetic energy of the locking action of upper lock structure is transmitted through transmission bar and controls the locking and loosening action of lower lock structure, namely one locking mechanism can lock three pipe bodies of upper, middle and lower adjacent to each other, simplifies the process of adjusting and locking of existing telescopic rod, and it is more convenient to use.

Description

Technical Field

[0001] This invention relates to the field of telescopic rods, and more specifically to a telescopic rod with one-click locking of multi-section tubes. Background Technology

[0002] Currently, telescopic rods are widely used in various fields of production and daily life. They are generally made up of multiple sections of tubing with progressively increasing diameters, which can be adjusted and fixed in place. For example, the most commonly used support rods for electronic products and tripods have independent locking mechanisms for each section of the telescopic rod. When using them, it is necessary to control the locking mechanism on each section individually, which is quite cumbersome. Summary of the Invention

[0003] The purpose of this invention is to address the above-mentioned shortcomings by providing a telescopic rod that can lock multiple sections of tube with a single click.

[0004] The present invention includes a telescopic tube body consisting of an inner tube, a middle tube, and an outer tube sequentially connected, and a locking mechanism for locking the various sections of the telescopic tube body.

[0005] The locking mechanism includes an upper locking structure for locking and unlocking the joint between the inner tube and the middle tube.

[0006] A lower locking structure used to lock and unlock the joint between the middle tube and the outer tube.

[0007] A transmission bar used to transmit the kinetic energy generated by the locking action of the upper locking structure and to control the locking and unlocking actions of the lower locking structure.

[0008] The first embodiment of the upper locking structure: The upper locking structure includes a fixed bracket fixedly installed at one end of the top of the middle tube and a cam locking rod rotatably installed on the fixed bracket for locking the joint between the inner tube and the middle tube. A transmission bar is movably installed on the middle tube. A transmission part is provided at the top end of the transmission bar. A drive part that cooperates with the transmission part is provided on the cam locking rod. When the cam locking rod rotates, the drive part and the transmission part cooperate to drive the transmission bar to move, thereby driving the lower locking structure to lock the joint between the middle tube and the outer tube.

[0009] The second embodiment of the upper locking structure: The upper locking structure includes a locking wedge block, an inner sleeve, an outer sleeve, and a transmission sleeve. The inner sleeve is fixed to the outer wall of one end of the top of the middle tube. The locking wedge block is movably installed on the inner tube and located inside the inner sleeve. The connecting surfaces of the locking wedge block and the inner sleeve are provided with mutually cooperating wedge-shaped surfaces. The transmission sleeve is threaded to one end of the bottom of the outer sleeve, and the outer sleeve is threaded to the inner sleeve, simultaneously driving the locking wedge block and the transmission sleeve to move in opposite directions. A transmission lever is provided at the top end of the transmission bar, and a transmission limiting groove that cooperates with the transmission lever is provided on the transmission sleeve. When the outer sleeve rotates and is displaced, the transmission limiting groove and the transmission lever cooperate to drive the transmission bar to move, thereby driving the lower locking structure to lock the joint between the middle tube and the outer tube.

[0010] Furthermore, the locking wedge is provided with a positioning protrusion ring, and the outer tube sleeve is provided with a positioning groove that cooperates with the positioning protrusion ring.

[0011] The lower locking structure includes a fixed wedge block and a movable wedge block. The wedge surfaces of the fixed wedge block and the movable wedge block are inclined at opposite angles. The fixed wedge block is fixedly installed on the inner side of the bottom end of the middle tube, and the movable wedge block is movably installed on the inner side of the bottom end of the middle tube and fixedly connected to the bottom end of the transmission bar. The bottom end of the middle tube is provided with an expansion slit. The movable wedge block and the fixed wedge block are engaged by wedge surfaces to open up the end of the middle tube and lock the middle tube and the outer tube.

[0012] The first embodiment of the lower locking structure: the fixed wedge block is provided with a U-shaped guide groove, the movable wedge block is provided with a guide protrusion that cooperates with the U-shaped guide groove, and the U-shaped guide groove and the guide protrusion are respectively provided with cooperating wedge surfaces.

[0013] The second embodiment of the lower locking structure: There are two fixed wedge blocks. The fixed wedge blocks are fixedly installed inside the middle tube. The movable wedge block has a fan-shaped structure. Both sides of the movable wedge block are provided with wedge-shaped surfaces that cooperate with the fixed wedge blocks.

[0014] The first connection method between the transmission bar and the central tube: the side wall of the central tube is provided with a transmission bar guide cut along the axial direction, the transmission bar is a T-shaped structure, the vertical part of the T-shaped structure is located in the transmission bar guide cut, and a limiting plate that cooperates with the tube wall of the central tube is provided on the inner side of the top end of the transmission bar.

[0015] The second connection method between the transmission bar and the central tube: the side wall of the central tube is provided with a transmission bar guide groove along the axial direction, and the transmission bar is located in the transmission bar guide groove.

[0016] Furthermore, a fixed sleeve is provided on the outer side of the top end of the outer tube, and a set of brake pads is provided on the outer side of the bottom end of the middle tube. Both the fixed sleeve and the fixed bracket are provided with transmission bar clearance grooves.

[0017] The advantages of this invention are: the kinetic energy generated by the locking action of the upper locking structure is transmitted through the transmission bar and controls the locking and unlocking actions of the lower locking structure. That is, one locking mechanism can simultaneously lock the three adjacent tubes (upper, middle and lower), simplifying the existing telescopic rod adjustment and locking process and making it more convenient to use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention.

[0019] Figure 2 yes Figure 1 Enlarged structural diagram of section A in the middle.

[0020] Figure 3 yes Figure 1 Enlarged structural diagram of section B.

[0021] Figure 4 This is a schematic diagram of the second embodiment of the upper locking structure.

[0022] Figure 5 This is a schematic diagram of the first embodiment of the locking structure.

[0023] Figure 6 This is an exploded view of the first embodiment of the locking structure.

[0024] Figure 7 This is a schematic diagram of the second embodiment of the locking structure.

[0025] Figure 8 This is a schematic diagram of the first connection method between the transmission bar and the central tube.

[0026] Figure 9 This is a schematic diagram of the second connection method between the transmission bar and the central tube. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0029] In the description of the embodiments of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, if terms such as "first" or "second" appear in the description of this invention, they are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0031] As shown in the attached drawings, the present invention includes a telescopic tube body consisting of an inner tube 4, a middle tube 5, and an outer tube 6 sequentially connected, and a locking mechanism for locking each section of the telescopic tube body.

[0032] The locking mechanism includes an upper locking structure 7 for locking and unlocking the joint between the inner tube 4 and the middle tube 5.

[0033] The lower locking structure 8 is used to lock and unlock the joint between the middle tube 5 and the outer tube 6.

[0034] A transmission bar 9 is used to transmit the kinetic energy generated by the locking action of the upper locking structure 7 and to control the locking and unlocking actions of the lower locking structure 8.

[0035] In this case, when the upper locking structure 7 performs the locking or unlocking action, it generates an upward pulling force or a downward pushing force on the transmission bar 9. The transmission bar 9 is a movable part, and the transmission bar 9 drives the lower locking structure 8 to perform the locking or unlocking action through the upward pulling and downward pushing force.

[0036] In this case, the diameters of the inner tube 4, the middle tube 5, and the outer tube 6 increase sequentially. The upper locking structure 7 is located outside the middle tube 5 and locks the joint between the inner tube 4 and the middle tube 5 by applying pressure inward. The lower locking structure 8 is located inside the middle tube 5 and locks the joint between the middle tube 5 and the outer tube 6 by applying support force outward.

[0037] The first embodiment of the upper locking structure 7: The upper locking structure 7 includes a fixed bracket 10 fixedly installed at one end of the top of the middle tube 5 and a cam locking rod 11 rotatably installed on the fixed bracket 10 for locking the joint of the inner tube 4 and the middle tube 5. The transmission bar 9 is movably installed on the middle tube 5. The top end of the transmission bar 9 is provided with a transmission part 15. The cam locking rod 11 is provided with a drive part 16 that cooperates with the transmission part 15. When the cam locking rod 11 rotates, the drive part 16 and the transmission part 15 cooperate to drive the transmission bar 9 to move, thereby driving the lower locking structure 8 to lock the joint of the middle tube 5 and the outer tube 6.

[0038] Specifically, the cam locking rod 11 is hinged to the fixing frame 10 via a rotating shaft. Both the upper and lower ends of the middle tube 5 are provided with expansion slits. The fixing frame 10 is fixedly installed at the top end of the middle tube 5. When the locking action is performed, when the cam locking rod 11 is pulled down, the cam of the cam locking rod 11 presses the side wall of the middle tube 5 inward. Under the counterforce of the fixing frame 10, the side wall of the top end of the middle tube 5 moves towards the middle, locking the joint between the inner tube 4 and the middle tube 5. A set of brake pads is provided on the inner side of the top end of the middle tube 5, which can increase the friction between the inner tube 4 and the middle tube 5 and prevent loosening.

[0039] During the downward movement of the cam locking rod 11, the drive unit 16 rotates and pulls the transmission bar 9 upward through the transmission unit 15. When the transmission bar 9 moves upward, it drives the lower locking structure 8 to lock the joint between the middle tube 5 and the outer tube 6.

[0040] In this case, the transmission part 15 is a tooth-shaped protrusion, which can be a single tooth or a rack-shaped tooth. The drive part 16 is a toothed groove or gear that mates with the tooth-shaped protrusion. Figure 2 The transmission part 15 shown is a rack and pinion, and the drive part 16 is a gear. The transmission method is not limited to only one type.

[0041] The second embodiment of the upper locking structure 7: The upper locking structure 7 includes a locking wedge block 20, an inner tube sleeve 21, an outer tube sleeve 22, and a transmission tube sleeve 23. The inner tube sleeve 21 is fixed on the outer wall of one end of the top of the middle tube 5. The locking wedge block 20 is movably installed on the inner tube 4 and located inside the inner tube sleeve 21. The connecting surfaces of the locking wedge block 20 and the inner tube sleeve 21 are provided with mutually cooperating wedge-shaped surfaces. The transmission tube sleeve 23 is threaded to one end of the bottom of the outer tube sleeve 22. The outer tube sleeve 22 is threaded to the inner tube sleeve 21 and simultaneously drives the locking wedge block 20 and the transmission tube sleeve 23 to move in opposite directions. The top end of the transmission bar 9 is provided with a transmission lever 25. The transmission tube sleeve 23 is provided with a transmission limiting groove 26 that cooperates with the transmission lever 25. When the outer tube sleeve 22 is displaced by rotation, the transmission limiting groove 26 and the transmission lever 25 cooperate to drive the transmission bar 9 to move, thereby driving the lower locking structure 8 to lock the joint between the middle tube 5 and the outer tube 6.

[0042] Specifically, the inner sleeve 21 is provided with a pair of vertical guide grooves, and the transmission sleeve 23 is provided with a pair of guide blocks that cooperate with the guide grooves.

[0043] Both the transmission sleeve 23 and the inner sleeve 21 are connected to the outer sleeve 22 via threaded connections, and the threads of the transmission sleeve 23 and the inner sleeve 21 are in the same direction.

[0044] When the outer sleeve 22 rotates and moves downwards in the threaded engagement with the inner sleeve 21, the transmission sleeve 23, due to the engagement of the guide groove and the guide block, will not rotate with the outer sleeve 22 and can only move upwards.

[0045] That is, during locking, the rotation of the outer sleeve 22 simultaneously causes the locking wedge block 20 and the transmission sleeve 23 to move closer to each other. As the locking wedge block 20 moves downward, it is squeezed by the inner sleeve 21, and the locking wedge block 20 expands to lock the joint between the inner tube 4 and the middle tube 5.

[0046] At the same time, when the transmission sleeve 23 moves upward, it drives the transmission bar 9 to move upward. When the transmission bar 9 moves upward, it drives the lower locking structure 8 to lock the joint between the middle tube 5 and the outer tube 6.

[0047] Furthermore, the locking wedge block 20 is provided with a positioning protrusion 27, and the outer sleeve 22 is provided with a positioning groove 28 that cooperates with the positioning protrusion 27. That is, the locking wedge block 20 can always move up and down with the outer sleeve 22 through the cooperation of the positioning protrusion 27 and the positioning groove 28.

[0048] Furthermore, the lower locking structure 8 includes a fixed wedge block 30 and a movable wedge block 31. The wedge surfaces of the fixed wedge block 30 and the movable wedge block 31 are inclined at opposite angles. The fixed wedge block 30 is fixedly installed on the inner side of the bottom end of the middle tube 5, and the movable wedge block 31 is movably installed on the inner side of the bottom end of the middle tube 5 and is fixedly connected to the bottom end of the transmission bar 9. The bottom end of the middle tube 5 is provided with an expansion slit. The movable wedge block 31 and the fixed wedge block 30 are engaged by wedge surfaces to open up the end of the middle tube 5 and lock the middle tube 5 and the outer tube 6.

[0049] When locking, an upward pulling force is applied to the movable wedge block 31, which compresses the fixed wedge block 30. At the same time, under the reverse force, the movable wedge block 31 and the fixed wedge block 30 simultaneously apply a supporting force to the bottom end of the middle tube 5 outward, thus locking the joint between the middle tube 5 and the outer tube 6.

[0050] The first embodiment of the lower locking structure 8: The fixed wedge block 30 is provided with a U-shaped guide groove 33, and the movable wedge block 31 is provided with a guide protrusion 34 that cooperates with the U-shaped guide groove 33. The U-shaped guide groove 33 and the guide protrusion 34 are respectively provided with cooperating wedge surfaces.

[0051] The second embodiment of the lower locking structure 8: There are two fixed wedge blocks 30. The fixed wedge blocks 30 are fixedly installed inside the middle tube 5. The movable wedge block 31 has a fan-shaped structure. Both sides of the movable wedge block 31 are provided with wedge-shaped surfaces that cooperate with the fixed wedge blocks 30.

[0052] The aforementioned fixing wedge blocks 30 are all fixed inside the middle tube 5 with adhesive. The fixing wedge blocks 30 can be provided with positioning grooves that cooperate with the side wall of the end of the middle tube 5, which can effectively prevent the fixing wedge blocks 30 from loosening or misaligning during use.

[0053] The first connection method between the transmission bar 9 and the middle tube 5: The side wall of the middle tube 5 is provided with a transmission bar guide cut along the axial direction. The transmission bar 9 is a T-shaped structure. The vertical part of the T-shaped structure is located in the transmission bar guide cut. A limiting plate 40 that cooperates with the tube wall of the middle tube 5 is provided on the inner side of the top end of the transmission bar 9.

[0054] The transmission bar 9 can be installed on the outside or inside of the middle tube 5. The limiting plate 40 and the transmission bar 9 form an I-shaped groove with a T-shaped structure to ensure the stability of the transmission bar 9 moving up and down.

[0055] The second connection method between the transmission bar 9 and the middle tube 5: The side wall of the middle tube 5 is provided with a transmission bar guide groove 35 along the axial direction, and the transmission bar 9 is located in the transmission bar guide groove 35.

[0056] Furthermore, a fixing sleeve 41 is provided on the outer side of the top end of the outer tube 6, and a set of brake pads 42 is provided on the outer side of the bottom end of the middle tube 5. The brake pads 42 are fixed by adhesive to increase the friction of the joint between the middle tube 5 and the outer tube 6 and prevent loosening. Both the fixing sleeve 41 and the fixing bracket 10 are provided with transmission bar clearance grooves.

Claims

1. A telescopic rod for one-click locking of multi-section pipes, comprising a telescopic pipe body consisting of an inner pipe (4), a middle pipe (5), and an outer pipe (6) sequentially connected, and a locking mechanism for locking each section of the telescopic pipe body. Its features The locking mechanism includes an upper locking structure (7) for locking and unlocking the joint between the inner tube (4) and the middle tube (5). The lower locking structure (8) is used to lock and release the joint between the middle tube (5) and the outer tube (6). A transmission bar (9) is used to transmit the kinetic energy generated by the locking action of the upper locking structure (7) and to control the locking and unlocking actions of the lower locking structure (8). When the upper locking structure (7) performs locking or unlocking action, it generates an upward pulling force or a downward pushing force on the transmission bar (9). The transmission bar (9) is a moving part. The transmission bar (9) drives the lower locking structure (8) to perform locking or unlocking action by pulling up and pushing down. The upper locking structure (7) includes a locking wedge (20), an inner tube sleeve (21), an outer tube sleeve (22), and a transmission tube sleeve (23). The inner tube sleeve (21) is fixed to the outer wall of the top end of the middle tube (5). The locking wedge (20) is movably installed on the inner tube (4). The transmission tube sleeve (23) is connected to the bottom end of the outer tube sleeve (22). The outer tube sleeve (22) is sleeved on the inner tube sleeve (21) and simultaneously drives the locking wedge (20) and the transmission tube sleeve (23). The transmission sleeve (23) moves; a transmission block (25) is provided at the top end of the transmission bar (9), and a transmission limiting groove (26) is provided on the transmission sleeve (23) to cooperate with the transmission block (25). When the outer sleeve (22) is displaced by rotation, the transmission limiting groove (26) and the transmission block (25) cooperate to drive the transmission bar (9) to move, thereby driving the lower locking structure (8) to lock the joint of the middle tube (5) and the outer tube (6).

2. The telescopic rod for one-click locking of multi-section tubes according to claim 1, characterized in that... The lower locking structure (8) includes a fixed wedge block (30) and a movable wedge block (31). The wedge surfaces of the fixed wedge block (30) and the movable wedge block (31) are inclined at opposite angles. The fixed wedge block (30) is fixedly installed on the inner side of the bottom end of the middle tube (5). The movable wedge block (31) is movably installed on the inner side of the bottom end of the middle tube (5) and is fixedly connected to the bottom end of the transmission bar (9). The bottom end of the middle tube (5) is provided with an expansion cut. The movable wedge block (31) and the fixed wedge block (30) cooperate with each other through the wedge surface to open up the end of the middle tube (5) to lock the middle tube (5) and the outer tube (6).

3. The telescopic rod for one-click locking of multi-section tubes according to claim 2, characterized in that... The fixed wedge block (30) is provided with a U-shaped guide groove (33), and the movable wedge block (31) is provided with a guide protrusion (34) that cooperates with the U-shaped guide groove (33). The U-shaped guide groove (33) and the guide protrusion (34) are respectively provided with wedge-shaped surfaces that cooperate with each other.

4. The telescopic rod for one-click locking of multi-section tubes according to claim 2, characterized in that... The fixed wedge block (30) is fixedly installed inside the middle tube (5), and the movable wedge block (31) has a fan-shaped structure. Both sides of the movable wedge block (31) are provided with wedge-shaped surfaces that cooperate with the fixed wedge block (30).

5. A telescopic rod for one-click locking of multi-section tubes according to claim 1, characterized in that... The side wall of the middle tube (5) is provided with a transmission bar guide groove (35) along the axial direction, and the transmission bar (9) is located in the transmission bar guide groove (35).

6. A telescopic rod for one-click locking of multi-section tubes according to claim 1, characterized in that... The outer tube (6) has a fixed sleeve (41) on the outside of the top end, and a set of brake pads (42) is provided on the outside of the bottom end of the middle tube (5). The fixed sleeve (41) and the fixed bracket (10) are both provided with transmission bar clearance grooves.

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