Telescopic pipe with tooth-shaped locking structure

Abstract

The telescopic pipe with the tooth-shaped locking structure comprises a front pipe and a rear pipe, the rear pipe is provided with an adjusting hole and a plurality of limiting teeth, the limiting teeth are arranged at intervals in the length direction of the adjusting hole to form a plurality of limiting grooves, and one end of the front pipe is inserted into the adjusting hole and can move relative to the rear pipe along the adjusting hole. The end, inserted into the rear pipe, of the front pipe is movably connected with a clamping and ejecting block matched with the limiting groove in an inserted mode, and when the front pipe moves relative to the rear pipe, the clamping and ejecting block is driven away from the limiting groove through the limiting teeth and then moves into the other adjacent limiting groove. A plurality of limiting teeth which are arranged at intervals and form a plurality of limiting grooves are arranged in the rear pipe, and a clamping and jacking block which is matched with the limiting grooves in an inserted mode and moves into another adjacent limiting groove after the limiting teeth drive the limiting grooves when the front pipe moves relative to the rear pipe is arranged on the front pipe, so that the front pipe can be locked and unlocked in the moving direction of the front pipe; when the front pipe moves relative to the rear pipe, locking can be achieved under various telescopic lengths through cooperation of the clamping and ejecting block and the multiple limiting grooves, the stretching lengths are various, and use is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of photographic equipment, in particular to a telescopic tube with a toothed locking structure. Background Art

[0002] A telescopic rod is a support rod with adjustable length, which is widely used in the field of photographic equipment, such as selfie sticks, tripods, etc. The existing telescopic rod is composed of a number of pipes that are connected in sequence. Among the two adjacent pipes, one pipe is provided with a socket, and the other pipe is provided with a block that can move relative to it in its radial direction. In the storage state, the block is retracted into the pipe and axially staggered with the socket. In the stretched state, the block protrudes from the pipe and plugs into the socket, so that the two pipes are locked in the stretched state. However, since one block is matched with one socket, the stretched length of the telescopic rod is unique, which is inconvenient to use. Summary of the invention

[0003] The object of the present invention is to provide a telescopic tube with a toothed locking structure to solve the problem that the existing telescopic rod is locked in a telescopic state by a clamping block and a plug hole, has a single stretching length, and is inconvenient to use.

[0004] The present invention is achieved through the following technical solutions:

[0005] A telescopic tube with a toothed locking structure comprises a plurality of pipe fittings which are sleeved in sequence, wherein one of the two adjacent pipe fittings is defined as a front pipe and the other is defined as a rear pipe, wherein the rear pipe has an adjustment hole and a plurality of limiting teeth, wherein the plurality of limiting teeth protrude from the hole wall of the adjustment hole and are arranged at intervals in the length direction of the adjustment hole to form a plurality of limiting grooves, wherein one end of the front pipe is inserted into the adjustment hole and can move relative to the rear pipe along the adjustment hole, and one end of the front pipe inserted into the rear pipe is movably connected with a clamping top block which is plugged into and cooperates with the limiting groove, and wherein the clamping top block is driven away from the limiting groove by the limiting teeth and then moves into another adjacent limiting groove when the front pipe moves relative to the rear pipe.

[0006] Further, the limiting groove has a front push surface, which is located in front of the top block when the top block is plugged into the limiting groove, and the front push surface is inclined backward from the inside to the outside, and the top block has a rear push surface that is obliquely pushed and matched with the front push surface; the limiting groove has a rear abutment surface, which is located behind the top block when the top block is plugged into the limiting groove, and the rear abutment surface extends along the radial direction of the front tube, and the top block has a front abutment surface that abuts against the rear abutment surface from front to back, and the front abutment surface and the rear abutment surface are parallel to each other.

[0007] Further, the limiting groove has a rear abutment surface, which is located behind the top block when the top block is plugged into the limiting groove, and the rear abutment surface extends radially along the front tube. The top block has a front abutment surface that abuts against the rear abutment surface from front to back, and the front abutment surface and the rear abutment surface are parallel to each other.

[0008] Furthermore, an elastic member for driving the clamping block to move into the limiting groove is provided in the front tube, and a positioning hole for inserting one end of the elastic member is formed on the clamping block.

[0009] Furthermore, the front tube can rotate relative to the rear tube so that the clamping block moves away from the limiting groove in the circumferential direction of the front tube. The front tube and the rear tube are provided with reset components, and when the front tube rotates relative to the rear tube, the reset components make the front tube have a movement tendency of reverse rotation, so that the clamping block can move and reset to be clamped into the limiting groove.

[0010] Furthermore, a front connecting piece that moves and rotates synchronously with the front tube is provided in the front tube, a rear connecting piece that rotates synchronously with the rear tube is provided in the adjusting hole, the rear connecting piece is rotatably connected to the front connecting piece and can move synchronously with the front tube relative to the rear tube, the reset piece is a torsion spring with one end connected to the front connecting piece and the other end connected to the rear connecting piece, the front connecting piece is provided with the clamping top block and an elastic piece that drives the clamping top block to move into the limiting groove.

[0011] Furthermore, the front connecting member and the rear connecting member together form a receiving cavity for receiving the reset member, the front connecting member is provided with a front fixing hole for inserting one end of the reset member, and the rear connecting member is provided with a rear fixing hole for inserting the other end of the reset member.

[0012] Furthermore, the front tube is provided with a through hole for the top block to pass through, the front connecting piece is provided with a guide hole for the top block and the elastic piece to be placed, and the top block extends from the through hole or retracts into the front tube along the guide hole.

[0013] Furthermore, a plurality of the limiting teeth spaced apart in the length direction of the adjusting hole constitute a limiting rack, and the rear connecting member is provided with a limiting tooth groove which slidably cooperates with the limiting rack to limit the rotation of the rear connecting member relative to the rear tube.

[0014] Furthermore, the front tube and the wall of the adjustment hole are spaced apart to form an assembly gap, and the end of the front tube inserted into the rear tube is provided with a damping plate accommodated in the assembly gap, and the damping plates are two in number, and the two damping plates are arranged opposite to each other in the radial direction of the front tube to form a guide gap that slides with the limit rack; the end of the rear tube into which the front tube is inserted is provided with a stopper, and the stopper partially extends into the adjustment hole to abut against the damping plate front and back to limit the front tube from moving away from the rear tube.

[0015] The advantage of the technical solution is that by arranging a plurality of limit teeth at intervals to form a plurality of limit grooves in the rear tube and arranging a top block on the front tube to be plugged into and matched with the limit grooves and to be driven out of the limit grooves by the limit teeth and then moved into another adjacent limit groove when the front tube moves relative to the rear tube, the front tube can be locked and unlocked in its moving direction, that is, when the front tube moves relative to the rear tube, locking can be achieved at a variety of telescopic lengths through the cooperation of a top block and a plurality of limit grooves, the stretching lengths are diverse, and it is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below.

[0018] Figure 1 is a three-dimensional diagram of a telescopic tube with a toothed locking structure disclosed in an embodiment;

[0019] Figure 2 is a front view of a telescopic tube with a toothed locking structure disclosed in an embodiment;

[0020] Figure 3 yes Figure 2 The cross-sectional view at AA in the middle (the state where the top card block is plugged into and matched with the limiting groove);

[0021] Figure 4 yes Figure 3 A partial enlarged view of point D in the middle;

[0022] Figure 5 yes Figure 4 A partial enlarged view of point E in the middle;

[0023] Figure 6 yes Figure 2 The cross-sectional view at AA in the middle (the state where the top block moves away from the limiting groove);

[0024] Figure 7 yes Figure 6 A partial enlarged view of point F in the middle;

[0025] Figure 8 yes Figure 2 Sectional view at the middle BB;

[0026] Fig. 9 yes Figure 2Sectional view at CC;

[0027] Fig.10 is an exploded view of a telescopic tube with a toothed locking structure disclosed in an embodiment;

[0028] Fig.11 yes Fig.10 A partial enlarged view of point G in the middle. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Example: Figure 1-11 As shown, the telescopic tube with a toothed locking structure is used in photography auxiliary equipment such as a selfie stick and a tripod, and includes a plurality of tubes 100 that are sequentially sleeved. Among the two adjacent tubes 100, one tube 100 is defined as a front tube 101, and the other tube 100 is defined as a rear tube 102. The rear tube 102 has an adjustment hole 103 and a plurality of limiting teeth 104. The plurality of limiting teeth 104 protrude from the hole wall of the adjustment hole 103 and are arranged at intervals in the length direction of the adjustment hole 103 to form a plurality of limiting grooves 105. One end of the front tube 101 is inserted into the adjustment hole 103 and can move relative to the rear tube 102 along the adjustment hole 103. One end of the front tube 101 inserted into the rear tube 102 is movably connected with a clamping top block 106 that is plugged into the limiting groove 105. When the front tube 101 moves relative to the rear tube 102, the clamping top block 106 is driven away from the limiting groove 105 by the limiting teeth 104 and then moves into another adjacent limiting groove 105. The present embodiment provides a telescopic tube with a toothed locking structure to solve the problem that the existing telescopic rod is locked in a telescopic state by a clamping block and a plug hole, has a unique stretching length, and is inconvenient to use. The invention mainly comprises: a plurality of limiting teeth 104 arranged at intervals to form a plurality of limiting grooves 105 are arranged in the rear tube 102, and a clamping top block 106 is arranged on the front tube 101 to be plugged and matched with the limiting grooves 105 and to move into another adjacent limiting groove 105 after the limiting teeth 104 drive the limiting grooves 105 away from the limiting grooves 105 when the front tube 101 moves relative to the rear tube 102, so that the front tube 101 can be locked and unlocked in its moving direction, that is, when the front tube 101 moves relative to the rear tube 102, the clamping top block 106 can be matched with the plurality of limiting grooves 105 to achieve locking at a plurality of telescopic lengths, and has a variety of stretching lengths, and is convenient to use.

[0031] In the embodiment of the present invention, the limiting groove 105 has a front push surface 107, and the front push surface 107 is located in front of the top block 106 when the top block 106 is plugged and matched with the limiting groove 105. The front push surface 107 is inclined backward from the inside to the outside, and the top block 106 has a rear push surface 108 that is obliquely matched with the front push surface 107. The above arrangement is configured by configuring the side of the limiting groove 105 located in front of the top block 106 to be inclined backward from the inside to the outside, and configuring the side of the top block 106 opposite to the front push surface 107 to be obliquely matched with the front push surface 107, so that the front tube 101 moves smoothly when it moves forward relative to the rear tube 102 to stretch its length, and the stretching effect is good.

[0032] In the embodiment of the present invention, the limiting groove 105 has a rear abutment surface 109, which is located behind the top block 106 when the top block 106 is plugged and matched with the limiting groove 105, and the rear abutment surface 109 extends along the radial direction of the front tube 101. The top block 106 has a front abutment surface 110 that abuts against the rear abutment surface 109 in front and back, and the front abutment surface 110 and the rear abutment surface 109 are parallel to each other. The above arrangement is configured by configuring the side of the limiting groove 105 located behind the top block 106 to extend along the radial direction of the front tube 101, and configuring the side of the top block 106 opposite to the rear abutment surface 109 to abut against the rear abutment surface 109 in front and back and be parallel to each other, so that the front tube 101 is not easy to retract backward into the rear tube 102 after the top block 106 is inserted into the limiting groove 105, and the locking effect is good.

[0033] In the embodiment of the present invention, the rear push surface 108 and the front abutment surface 110 transition gradually.

[0034] In the embodiment of the present invention, a plurality of limit teeth 104 arranged at intervals in the length direction of the adjustment hole 103 constitute a limit rack 111, and there are two limit racks 111 and two clamping blocks 106, which correspond to each other. The two clamping blocks 106 are opposite in the radial direction of the front tube 101 and staggered in the axial direction of the front tube 101. When the front tube 101 moves relative to the rear tube 102, the two clamping blocks 106 are synchronously moved into or out of the corresponding limit groove 105. The above arrangement configures the limit rack 111 and the clamping block 106 into two, so that the front tube 101 and the rear tube 102 have a good locking effect. In addition, because the two clamping blocks 106 are opposite in the radial direction of the front tube 101 and staggered in the axial direction of the front tube 101, when the two clamping blocks 106 are respectively inserted into the corresponding limit grooves 105, the front tube 101 can be locked on the rear tube 102 at different positions in the axial direction, and the locking effect is good.

[0035] In the embodiment of the present invention, an elastic member 112 for driving the top card block 106 to move into the limiting groove 105 is arranged in the front tube 101. Specifically, the elastic member 112 is a spring. The above arrangement enables the top card block 106 to move into another adjacent limiting groove 105 after being driven away from the limiting groove 105 by the limiting teeth 104 when the front tube 101 moves relative to the rear tube 102, and has a simple structure and is easy to implement.

[0036] In the embodiment of the present invention, a positioning hole 113 is formed on the top block 106 for inserting one end of the elastic member 112. The above arrangement enables the elastic member 112 to be assembled stably with the top block 106 by configuring the positioning hole 113 on the top block 106 for inserting one end of the elastic member 112.

[0037] In the embodiment of the present invention, the front tube 101 can rotate relative to the rear tube 102 so that the clamping block 106 moves away from the limiting groove 105 in the circumferential direction of the front tube 101. The front tube 101 and the rear tube 102 are provided with a reset member 114. When the front tube 101 rotates relative to the rear tube 102, the reset member 114 makes the front tube 101 have a movement tendency of reverse rotation, so that the clamping block 106 can move and reset and snap into the limiting groove 105. The above arrangement is configured to be able to rotate relative to the rear tube 102, and the reset member 114 is configured on the front tube 101 and the rear tube 102 so that the front tube 101 has a movement tendency of reverse rotation when the front tube 101 rotates relative to the rear tube 102, so that the front tube 101 can be rotated to unlock (the clamping block 106 moves away from the limiting groove 105) and retracts backwards, and can be rotated to reset and lock after retracting into place (the clamping block 106 is reinserted into the limiting groove 105), and the operation is quick and simple.

[0038] In the embodiment of the present invention, a front connecting member 115 is provided in the front tube 101 and can move and rotate synchronously therewith, a rear connecting member 116 is provided in the adjusting hole 103 and can rotate synchronously with the rear tube 102, the rear connecting member 116 is rotatably connected to the front connecting member 115 and can move synchronously with the front tube 101 relative to the rear tube 102, the reset member 114 is a torsion spring with one end connected to the front connecting member 115 and the other end connected to the rear connecting member 116, and the front connecting member 115 is provided with a clamping block 106 and an elastic member 112 for driving the clamping block 106 to move into the limiting groove 105. The above arrangement is achieved by configuring a front connecting member 115 in the front tube 101, configuring a rear connecting member 116 in the rear tube 102, configuring the top block 106 and the elastic member 112 on the front connecting member 115, and the reset member 114 is a torsion spring respectively connected to the front connecting member 115 and the rear connecting member 116, so that the front tube 101 has a reverse rotation tendency when it rotates relative to the rear tube 102, and the structure is simple and compact.

[0039] In the embodiment of the present invention, the front connecting member 115 and the rear connecting member 116 are enclosed to form a receiving cavity 117 for accommodating the reset member 114. The front connecting member 115 is provided with a front fixing hole 118 for inserting one end of the reset member 114, and the rear connecting member 116 is provided with a rear fixing hole 119 for inserting the other end of the reset member 114. The above arrangement is configured to enclose the receiving cavity 117 by configuring the front connecting member 115 and the rear connecting member 116 to enclose, and the reset member 114 is accommodated in the receiving cavity 117 and the two free ends are respectively plugged and matched with the front connecting member 115 and the rear connecting member 116, so that the reset member 114, the front connecting member 115 and the rear connecting member 116 are stably connected and have good reset ability.

[0040] In the embodiment of the present invention, the rear connecting member 116 has a positioning column extending from the accommodating cavity 117 toward the front connecting member 115 and rotatably connected to the front connecting member 115, and the reset member 114 is passed through the positioning column. Since the rear connecting member 116 has the positioning column and the reset member 114 is passed through the positioning column, the reset member 114 is assembled stably.

[0041] In the embodiment of the present invention, the front tube 101 is provided with a through hole 120 for the top block 106 to pass through, and the front connecting member 115 is provided with a guide hole 121 for the top block 106 and the elastic member 112 to be placed, and the top block 106 extends from the through hole 120 or retracts into the front tube 101 along the guide hole 121. The above arrangement is provided on the front connecting member 115 for the top block 106 and the elastic member 112 to be placed, and on the front tube 101 for the top block 106 to extend or retract into the through hole 120, so that the front connecting member 115, the front tube 101, the top block 106 and the elastic member 112 are assembled stably.

[0042] In the embodiment of the present invention, the rear connecting member 116 is provided with a limiting tooth groove 122 that slides with the limiting rack 111 to limit the rotation of the rear connecting member 116 relative to the rear tube 102. The above arrangement enables the rear connecting member 116 to move along the rear tube 102 and be fixed to the rear tube 102 in the circumferential direction by configuring the limiting tooth groove 122 that slides with the limiting rack 111 to limit the rotation of the rear connecting member 116 relative to the rear tube 102 on the rear connecting member 116, which has a simple structure and is easy to implement.

[0043] In the embodiment of the present invention, the front tube 101 and the hole wall of the adjustment hole 103 are spaced apart to form an assembly gap (not marked in the figure), and one end of the front tube 101 inserted into the rear tube 102 is provided with a damping plate 124 accommodated in the assembly gap, and there are two damping plates 124, which are arranged opposite to each other in the radial direction of the front tube 101 to form a guide gap (not marked in the figure) that is slidably matched with the limit rack 111. The above arrangement, by arranging the damping plate 124 between the front tube 101 and the rear tube 102, makes the front tube 101 have a sense of frustration when moving relative to the rear tube 102, and increases the friction between the two tubes after moving into place (in the locked state), and has a good locking effect.

[0044] In the embodiment of the present invention, a stopper 126 is provided at one end of the rear tube 102 into which the front tube 101 is inserted, and the stopper 126 partially extends into the adjustment hole 103 and is used to abut against the damping plate 124 to limit the front tube 101 from moving away from the rear tube 102. The above arrangement makes the assembly of the front tube 101 and the rear tube 102 stable and prevents the front tube 101 from detaching by arranging the stopper 126 on the rear tube 102, which partially extends into the adjustment hole 103 and abuts against the damping plate 124 to limit the front tube 101 from moving away from the rear tube 102.

[0045] It should be noted that the outer wall of the pipe 100 may be, but is not limited to, circular, diamond-shaped, notched or elliptical.

[0046] It should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but such information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the "first" information may also be referred to as the "second" information, and similarly, the "second" information may also be referred to as the "first" information. In addition, the terms "center of a circle", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0047] As described above, one or more implementation methods are provided in combination with specific contents, and the specific implementation of the present invention is not limited to these descriptions. Any similarity or similarity with the method, structure, etc. of the present invention, or any technical deduction or replacement based on the concept of the present invention shall be regarded as the protection of the present invention.

Claims

1. A telescopic tube with a toothed locking structure, comprising a plurality of tubes (100) which are sleeved in sequence, wherein one of the two adjacent tubes (100) is defined as a front tube (101), and the other tube (100) is defined as a rear tube (102). It is characterized in that The rear tube (102) has an adjustment hole (103) and a plurality of limiting teeth (104); the plurality of limiting teeth (104) protrude from the hole wall of the adjustment hole (103) and are arranged at intervals in the length direction of the adjustment hole (103) to form a plurality of limiting grooves (105); one end of the front tube (101) is inserted into the adjustment hole (103) and can move along the adjustment hole (103) relative to the rear tube (102); one end of the front tube (101) inserted into the rear tube (102) is movably connected with a clamping block (106) plugged into the limiting groove (105); when the front tube (101) moves relative to the rear tube (102), the clamping block (106) is driven away from the limiting groove (105) by the limiting teeth (104) and then moves into another adjacent limiting groove (105).

2. The telescopic tube with toothed locking structure according to claim 1, It is characterized in that The limiting groove (105) has a front push surface (107), and the front push surface (107) is located in front of the clamping top block (106) when the clamping top block (106) is plugged into the limiting groove (105). The front push surface (107) is inclined from the inside to the outside and backward, and the clamping top block (106) has a rear push surface (108) that is obliquely pushed and matched with the front push surface (107); The limiting groove (105) has a rear abutment surface (109), and the rear abutment surface (109) is located behind the clamping top block (106) when the clamping top block (106) is plugged into the limiting groove (105). The rear abutment surface (109) extends along the radial direction of the front tube (101). The clamping top block (106) has a front abutment surface (110) that abuts against the rear abutment surface (109) in front and back, and the front abutment surface (110) and the rear abutment surface (109) are parallel to each other.

3. The telescopic tube with toothed locking structure according to claim 1, It is characterized in that A plurality of limit teeth (104) arranged at intervals in the length direction of the adjustment hole (103) constitute a limit rack (111); the limit rack (111) and the clamping top block (106) are both two in number and correspond to each other one to one; the two clamping top blocks (106) are opposite to each other in the radial direction of the front tube (101) and staggered in the axial direction of the front tube (101); the two clamping top blocks (106) are synchronously moved into or out of the corresponding limit groove (105) when the front tube (101) moves relative to the rear tube (102).

4. The telescopic tube with toothed locking structure according to claim 1, It is characterized in that An elastic member (112) is provided in the front tube (101) for driving the clamping block (106) to move into the limiting groove (105), and a positioning hole (113) is formed on the clamping block (106) for inserting one end of the elastic member (112).

5. The telescopic tube with toothed locking structure according to claim 1, It is characterized in that The front tube (101) can rotate relative to the rear tube (102) so that the clamping block (106) moves away from the limiting groove (105) in the circumferential direction of the front tube (101). A reset member (114) is provided on the front tube (101) and the rear tube (102). When the front tube (101) rotates relative to the rear tube (102), the reset member (114) enables the front tube (101) to have a reverse rotation tendency, thereby enabling the clamping block (106) to move and reset and clamp into the limiting groove (105).

6. The telescopic tube with toothed locking structure according to claim 5, It is characterized in that The front tube (101) is provided with a front connecting piece (115) which moves and rotates synchronously with the front tube (101), the adjusting hole (103) is provided with a rear connecting piece (116) which rotates synchronously with the rear tube (102), the rear connecting piece (116) is rotatably connected to the front connecting piece (115) and can move synchronously with the front tube (101) relative to the rear tube (102), the reset piece (114) is a torsion spring with one end connected to the front connecting piece (115) and the other end connected to the rear connecting piece (116), the front connecting piece (115) is provided with the clamping top block (106) and an elastic piece (112) which drives the clamping top block (106) to move into the limiting groove (105).

7. The telescopic tube with toothed locking structure according to claim 6, It is characterized in that The front connecting piece (115) and the rear connecting piece (116) are combined to form a receiving cavity (117) for receiving the reset piece (114); the front connecting piece (115) is provided with a front fixing hole (118) for inserting one end of the reset piece (114); and the rear connecting piece (116) is provided with a rear fixing hole (119) for inserting the other end of the reset piece (114).

8. The telescopic tube with toothed locking structure according to claim 6, It is characterized in that The front tube (101) is provided with a through hole (120) for the top clamping block (106) to pass through, and the front connecting piece (115) is provided with a guide hole (121) for the top clamping block (106) and the elastic piece (112) to be placed in, and the top clamping block (106) extends from the through hole (120) or retracts into the front tube (101) along the guide hole (121).

9. The telescopic tube with toothed locking structure according to claim 6, It is characterized in that A plurality of the limiting teeth (104) spaced apart in the length direction of the adjusting hole (103) form a limiting rack (111), and the rear connecting member (116) is provided with a limiting tooth groove (122) which is slidably matched with the limiting rack (111) to limit the rotation of the rear connecting member (116) relative to the rear tube (102).

10. The telescopic tube with toothed locking structure according to claim 3, It is characterized in that The front tube (101) and the adjusting hole (103) are spaced apart to form an assembly gap, and one end of the front tube (101) inserted into the rear tube (102) is provided with a damping sheet (124) accommodated in the assembly gap, and there are two damping sheets (124). The two damping sheets (124) are arranged opposite to each other in the radial direction of the front tube (101) to form a guide gap that is slidably matched with the limiting rack (111); A stopper (126) is provided at one end of the rear tube (102) into which the front tube (101) is inserted, and a portion of the stopper (126) extends into the adjustment hole (103) to abut against the damping plate (124) in front and back to limit the front tube (101) from moving away from the rear tube (102).

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