CN113137412A

CN113137412A - Extending structure reaches from rapping bar, lighting fixture, photographic tripod

Info

Publication number: CN113137412A
Application number: CN202010067254.0A
Authority: CN
Inventors: 陈庆元
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-01-20
Filing date: 2020-01-20
Publication date: 2021-07-20

Abstract

The invention discloses a telescopic structure, which comprises an inner pipe, an outer pipe, a telescopic assembly connected with the inner pipe and a driving surface arranged on the outer pipe, wherein the telescopic assembly comprises an elastic part and a convex part, one end of the convex part abuts against the elastic part, the other end of the convex part extends out of the side wall of the inner pipe, an inclined surface is formed on the convex part, the driving surface and the end surface of the outer pipe are positioned on different horizontal heights, when the inner pipe moves towards the outer pipe, the driving surface extrudes the convex part inwards along the inclined surface, then the outer pipe continuously extrudes the convex part along the inclined surface, so that the convex part abuts against the inner wall of the outer pipe to translate, and the inner pipe and the outer pipe are overlapped and contracted along the axial direction. The invention also discloses a selfie stick, a lamp bracket and a photographic tripod. The matching structure of the telescopic assembly and the joint is simple, and the assembly volume is reduced; the contraction between the adjacent pipe bodies does not need independent operation, the automatic contraction can be realized, the operation is simple and convenient, and the flexibility of length control is high.

Description

Extending structure reaches from rapping bar, lighting fixture, photographic tripod

Technical Field

The invention belongs to the technical field of selfie sticks, and particularly relates to a telescopic structure, a selfie stick, a lamp bracket and a photographic tripod.

Background

The telescopic link structure from rapping bar, lighting fixture, tripod etc. on the existing market is all relatively complicated, does not have simple limit structure after tensile, leads to can not bearing great power in the axial, if adopt prior art's locking mechanical system, then need carry out the unblock operation respectively to every section of pipe body during the shrink, operates not portably enough, and the volume is great moreover, high in manufacturing cost.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a telescopic structure which can realize axial limiting and is convenient and fast to shrink, a selfie stick, a lamp bracket and a photographic tripod.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a telescopic structure, includes the inner tube, establishes the outer tube of being connected with the inner tube cover, the flexible subassembly that links to each other with the inner tube, and locate the driving surface of outer tube, flexible subassembly includes the elastic component, and one end offsets with the elastic component, the convex part that the other end stretches out from the trompil of inner tube lateral wall, forms the inclined plane on this convex part, driving surface and outer tube terminal surface are located different level, and when the inside pipe place direction of outside pipe removed in the inner tube, the driving surface continued extrusion convex part along the inclined plane after the inclined plane extrusion convex part rebound, and the outer tube continues the extrusion convex part along the inclined plane for the convex part is supporting outer tube inner wall translation, and inner tube and outer tube shrink along axial coincide.

When the inner pipe and the outer pipe are contracted, the purpose that the convex part of the telescopic assembly moves inwards can be realized only through the driving surface, the convex part is not required to be pressed, the operation is convenient, and the structure is simple.

Further, the driving surface is a driving groove side wall, the driving groove extends along the length direction of the outer pipe, and the driving groove is provided with an opening along the radial direction and the length direction of the outer pipe.

Furthermore, the end part of the outer pipe is connected with a joint, the end part of the joint protrudes from the inner wall along the radial direction to form a flange, the driving groove is of a groove structure which penetrates through the flange along the axial direction, and the driving surface is a side wall of the groove structure.

Furthermore, the convex part includes along the left convex part and the right convex part of radial symmetry setting, and the both ends of elastic component respectively with left convex part and right convex part looks butt, the inner tube lateral wall is seted up just right left trompil and right trompil, the driving surface includes the left driving surface with left convex part complex and the right driving surface with right convex part complex.

Further, the inclined surface inclines from the direction close to the outer pipe to the other side and from inside to outside.

Furthermore, the end part of the inner pipe is connected with a fixed seat, one end of the elastic part is abutted against the fixed seat, the convex part penetrates through the fixed seat and then extends out of the open hole, and the outer wall of the convex part forms a step-shaped structure which can be abutted against the inner wall of the inner pipe.

The invention also discloses a selfie stick, which comprises a clamping device for clamping the shooting equipment, a telescopic rod rotationally connected with the clamping device and a handheld part, wherein the telescopic rod at least comprises a middle pipe, an outer pipe sleeved outside the middle pipe, a telescopic assembly connected with the middle pipe and a driving surface arranged on the outer pipe, the telescopic assembly comprises an elastic piece and a convex part, one end of the convex part abuts against the elastic piece, the other end of the convex part extends out of the second groove on the side wall of the middle pipe, an inclined surface is formed on the convex part, the driving surface and the end surface of the outer pipe are positioned on different horizontal heights, when the middle pipe moves towards the direction of the outer pipe, the driving surface extrudes the convex part inwards along the inclined surface, the outer pipe continuously extrudes the convex part along the inclined surface, the convex part abuts against the inner wall of the middle pipe to move, and the middle pipe and the outer pipe are overlapped and shrunk along the axial direction.

The connection structure between the adjacent tube bodies of the selfie stick is simple, each tube body does not need to be independently operated when the selfie stick is contracted, the adjacent tube bodies can be automatically contracted in a matched mode, the operation is simple and convenient, and the size is small.

Preferably, a third telescopic assembly is connected to the outer tube and comprises an unlocking convex part which can extend out from the locking hole.

According to the invention, the selfie stick has a larger supporting force in the axis direction through the limiting and matching action of the unlocking convex part and the locking hole when being stretched, and the selfie stick is positioned so that the selfie stick cannot freely stretch and retract along the axial direction.

Preferably, the driving surface is a driving groove side wall, the driving groove extends along the length direction of the outer pipe and is provided with an opening along the radial direction and the length direction of the outer pipe; the end part of the outer pipe is connected with a joint, the end part of the joint protrudes from the inner wall along the radial direction to form a flange, the driving groove is of a groove structure which penetrates through the flange along the axial direction, and the driving surface is a side wall of the groove structure.

The invention also discloses a lamp bracket, which comprises a telescopic foot margin, a connecting seat which can be connected with a photographic lamp, and a lifting mechanism which is arranged between the telescopic foot margin and the connecting seat, wherein the lifting mechanism at least comprises a middle pipe, an outer pipe which is sleeved outside the middle pipe, a telescopic component which is connected with the middle pipe, and a driving surface which is arranged on the outer pipe, the telescopic component comprises an elastic part and a convex part, one end of the convex part is abutted against the elastic part, the other end of the convex part extends out of a second groove on the side wall of the middle pipe, an inclined surface is formed on the convex part, the driving surface and the end surface of the outer pipe are positioned on different horizontal heights, when the middle pipe moves towards the direction of the outer pipe, the driving surface extrudes the convex part inwards along the inclined surface, the outer pipe continuously extrudes the convex part along the inclined surface, so that the convex part pushes against the inner wall of the outer pipe to move horizontally, and the middle pipe and the outer pipe are overlapped and contracted along the axial direction.

The invention also discloses a photographic tripod, which comprises a platform which can be connected with photographic equipment, a first foot tube, a second foot tube and a third foot tube which are rotatably connected with the platform, wherein the first foot tube at least comprises a middle tube, an outer tube which is sleeved outside the middle tube, a telescopic component which is connected with the middle tube, and a driving surface which is arranged on the outer tube, the telescopic component comprises an elastic part and a convex part, one end of the convex part is abutted against the elastic part, the other end of the convex part extends out of a second groove on the side wall of the middle tube, an inclined surface is formed on the convex part, the driving surface and the end surface of the outer tube are positioned on different horizontal heights, when the middle tube moves towards the outer tube, the driving surface extrudes the convex part inwards along the inclined surface, the outer tube continuously extrudes the convex part along the inclined surface, so that the convex part pushes against the inner wall of the outer tube to move, and the middle tube and the outer tube are overlapped and shrunk along the axial direction.

Furthermore, a limiting hole for the protruding part to extend out is formed on the outer tube.

Further, the driving surface is a driving groove side wall, the driving groove extends along the length direction of the outer pipe, and the driving groove is provided with an opening along the radial direction and the length direction of the outer pipe; the end part of the outer pipe is connected with a joint, the end part of the joint protrudes from the inner wall along the radial direction to form a flange, the driving groove is of a groove structure which penetrates through the flange along the axial direction, and the driving surface is a side wall of the groove structure.

The invention has the beneficial effects that: 1) the matching structure of the telescopic assembly and the joint is simple, so that the assembly volume is reduced; 2) the contraction between the adjacent pipe bodies does not need to be operated independently, and the outer pipe and the inner pipe can automatically contract when moving axially relative to each other, so that the operation is simple and convenient; 3) adjacent pipe bodies in different groups can be independently telescopic operated, and the flexibility of length control is high; 4) the selfie stick has axial supporting force, and the use flexibility is higher; 5) the self-timer rod is axially limited, so that the self-timer rod cannot shrink randomly to influence use; 6) the unlocking of the selfie stick can be realized by pressing the unlocking convex part, and the use is convenient; 7) the telescopic structure can be applied to products such as a selfie stick, a lamp bracket, a photographic tripod and the like, and is wide in applicability.

Drawings

Fig. 1 is an exploded view of the telescopic structure of the present invention.

FIG. 2 is a cross-sectional view of the inner tube and telescoping assembly of the present invention after assembly.

Figure 3 is a cross-sectional view of a joint of the present invention.

Fig. 4 is a perspective view of a joint of the present invention.

Fig. 5 is a perspective view of a selfie stick according to the present invention.

FIG. 6 is a perspective view showing a partial structure of a selfie stick according to the present invention.

Fig. 7 is a perspective view of the present invention from the fully extended state of the racket.

Fig. 8 is an enlarged view of a structure in fig. 7.

Fig. 9 is a schematic perspective view of the tube of the present invention.

FIG. 10 is a first cross-sectional view showing the retraction process of the extendable rod of the selfie stick according to the present invention.

FIG. 11 is a sectional view showing a second embodiment of the telescopic rod of the present invention in a retracting process.

FIG. 12 is a third cross-sectional view showing the retracting process of the retractable shaft of the present invention.

Fig. 13 is a cross-sectional view showing a fourth embodiment of the telescopic rod of the present invention in a retracting process.

Fig. 14 is a perspective view of the lamp holder of the present invention.

Fig. 15 is a first perspective view of the lamp holder according to the present invention in a stretched state.

Fig. 16 is a perspective view of a lamp holder according to the present invention.

Fig. 17 is a perspective view of the lamp holder of the present invention in a stretched state.

Figure 18 is a perspective view of a photographic tripod according to the present invention.

Fig. 19 is a perspective view showing a tripod according to the present invention in a stretched state.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

As shown in fig. 1-4, a telescopic structure comprises an inner tube 1, an outer tube 3 coaxially sleeved with the inner tube 1, a telescopic assembly 4 connected to the upper end of the inner tube 1, and a driving surface 31 located on the outer tube 3.

The telescopic assembly 4 includes an elastic member 41 installed along the radial direction of the inner tube 1, a protrusion 42 having one end abutting against the elastic member 41 and the other end protruding from the opening 11 on the side wall of the inner tube 1, and an inclined surface 421 located on the outward side surface of the protrusion 42, in this embodiment, the elastic member 41 is a spring; in order to facilitate the installation of the elastic element 41, the fixing seat 6 is installed at the upper end of the inner tube 1 (the direction in fig. 1 is used as a standard), the fixing seat 6 comprises a left body and a right body which are connected through a top annular structure, an installation groove 61 is formed on the side surface of the left body, a left round hole 62 is formed above the installation groove 61, a right round hole is formed on the side surface of the right body (shielded in fig. 1), during the assembly connection, a first connecting piece 63 which is arranged outside the inner tube 1 is covered, a first bulge on the inner wall of the fixing seat penetrates through the round hole 12 on the inner tube 1 and then extends into the left round hole 62, a second connecting piece 64 which is arranged outside the inner tube 1 is symmetrically covered with the first connecting piece 63, a second bulge 641 on the inner wall of the fixing seat penetrates through another round hole (shielded in fig. 1) on the inner tube 1 and then extends into the right round hole, and the assembly connection of the inner tube 1 and the fixing seat 6 is realized. For convenience of processing, the first connecting piece 63 and the second connecting piece 64 are designed to have the same structure, the first connecting piece 63 is provided with a first square groove 632, the first square groove 632 is located below the first protrusion, the second connecting piece 64 is provided with a second square groove 642, and the second square groove 642 is located below the second protrusion 641.

In order to prevent the inner pipe 1 and the outer pipe 3 from deflecting in the circumferential direction, the inner pipe 1 and the outer pipe 3 are both provided with rotation stopping convex ribs, and two rotation stopping convex ribs symmetrical to the inner pipe 1 respectively penetrate through a gap between the left body and the right body.

One end of the elastic element 41 is abutted against the side wall of the mounting groove 61, and one end of the convex part 42 with the inclined surface 421 extends out of the opening of the mounting groove 61, then extends out of the opening hole 11 on the inner pipe 1 and penetrates out of the first square groove 632; in order to realize the limit assembly of the convex part 42 and the fixed seat 6, a step-shaped structure 422 which can be abutted against the inner wall of the inner pipe 1 is formed on the periphery of the outer wall of the convex part 42.

The inclined surface 421 of the protrusion 42 is inclined from the direction close to the outer tube 3 to the other side from the inside to the outside, that is, from the top to the bottom in fig. 2 from the inside to the outside.

In other embodiments, in order to make the overall structure more stable, the telescopic assembly 4 may be designed as two radially symmetrical protrusions, that is, the protrusion 42 includes a left protrusion and a right protrusion symmetrically disposed along the radial direction, two ends of the elastic member 41 are respectively abutted against the left protrusion and the right protrusion, two mounting grooves are also formed on the fixing base 6, and the sidewall of the inner tube 1 is provided with a left opening and a right opening, which are opposite to each other, so that the left protrusion extends out of the left opening. Correspondingly, the drive surfaces 31 comprise a left drive surface cooperating with the left protrusion and a right drive surface cooperating with the right protrusion.

The lower end of the outer tube 3 is connected with a joint 5, as shown in fig. 1, 3 and 4, a limit hole 34 and a circular hole 36 coaxial with the limit hole are formed on the side wall of the lower end of the outer tube 3, a mounting column 53 which can extend into the circular hole 36 to realize the fixed connection between the joint 5 and the outer tube 3 is formed on the inner wall of the joint, a convex rib 52 which realizes the rotation stopping matching between the joint 5 and the outer tube 3 is further formed, and a flange 51 which realizes the axial fixed assembly between the joint and the outer tube 3 is further formed.

The flange 51 is formed by protruding from the inner wall of the knuckle 5 along a radial direction, the flange 51 is formed at a position opposite to the mounting post 53 with a groove structure penetrating the axial length of the flange 51, the groove structure is a driving groove 33, the driving groove 33 comprises a first side surface provided by the inner wall of the knuckle 5, a second side surface provided by the flange 51 after being disconnected and a third side surface, namely, the driving groove 33 is provided with an opening along the length direction and the radial direction of the outer tube 3, and the first side surface is the driving surface 31.

The first side surface as the driving surface 31 may be a flat surface or may have an inclined structure in the same direction as the inclination direction of the convex portion 42.

After the outer tube 3 and the knuckle 5 are assembled and connected, the end surface of the bottom end of the outer tube 3 abuts against the side surface of the flange 51, so that the driving surface 31 and the end surface 32 of the outer tube 3 are adjacent but not located at the same horizontal level, based on the direction of fig. 1, the end surface 32 of the outer tube 3 is located above the driving surface 31, and part of the end surface of the outer tube 3 is exposed in the driving groove 33.

When the inner tube 1 and the outer tube 3 need to be contracted, that is, the inner tube 3 moves to the upper side of the outer tube 3, the driving surface 31 contacts the inclined surface 421 first, presses the protrusion 42 along the inclined surface 421, so that the protrusion 42 moves radially to the inside of the inner tube 1 and then falls into the driving groove 33, at this time, the end surface of the outer tube 3 continues to press the protrusion 42 along the inclined surface 421, so that the protrusion 42 continues to move radially until the protrusion 42 falls into the outer tube 3 and axially translates against the inner wall of the outer tube 3, thereby realizing the overlapping and contraction of the inner tube 1 and the outer tube 3 in the axial direction.

Example two

A selfie stick comprises a clamping device 7 for clamping a shooting device, a telescopic rod rotatably connected with the clamping device 7, and a handheld part 8; clamping device 7 includes centre gripping arm 71, the switching arm 72 parallel with the telescopic link and the connection end 73 with switching arm 72 pin joint, and the one end of connecting end 73 and telescopic link links to each other, and the other end of telescopic link links to each other with handheld portion 8, can install in handheld portion 8 and shoot the control unit of equipment adaptation, and control unit is no longer repeated for prior art.

The telescopic link includes well pipe 2 at least, overlaps the outer tube 3 of establishing outside well pipe 2, connects the flexible subassembly 4 at well 1 upper end of pipe, and is located the driving surface 31 of outer tube 3.

The structure of the telescopic assembly 4 is the same as that of the telescopic assembly, and the details are not repeated.

The upper end of the middle pipe 2 is provided with a slot 21 and a hole 22 coaxial with the slot 21, the hole 22 is used for connecting with the telescopic assembly 4, and the slot 21 is used for the protrusion 42 to extend out. The joint structure at the lower end of the outer tube 3 is the same as the joint structure 5 described above, and will not be described in detail.

The matching structure of the middle tube 2 and the outer tube 3 is the same as that of the inner tube 1 and the outer tube 3 in the first embodiment, and the description is omitted.

As shown in fig. 5-13, a self-timer rod, the telescopic rod at least comprises an inner tube 1, a middle tube 2 coaxially sleeved with the inner tube 1, an outer tube 3 sleeved outside the middle tube 2, a telescopic component 4 connected to the lower end of the middle tube 2, a second telescopic component connected to the lower end of the inner tube 1, a driving surface 23 located in the middle tube 2, and a driving surface 31 located in the outer tube 3. The direction described at this time is opposite to that in the first embodiment, the inner tube 1 having a smaller inner diameter is located above, and the outer tube 3 having a larger inner diameter is located below.

The structure of the second telescopic assembly and the telescopic assembly 4 is the same as that of the telescopic assembly, and the description is omitted.

The lower end of the middle pipe 2 is also provided with a second slot 24 and a second hole 25 coaxial with the second slot 24, the second hole 25 is used for connecting with the telescopic assembly 4, the second slot 24 is used for extending out a convex part 42 of the telescopic assembly 4, and the slot 21 at the upper end of the middle pipe 2 is used for extending out a convex part of the second telescopic assembly. The second joint structure at the upper end of the middle pipe 2 is the same as the structure of the joint 5, and is not described in detail.

As shown in fig. 7, when the selfie stick is completely unfolded, in order to keep the selfie stick in a stretched state and not automatically shrink, a locking hole 811 is formed on the upper end side wall of the lower tube 81 with the largest outer diameter of the telescopic rod, so that when the telescopic rod is completely unfolded, an unlocking convex portion 812 of a third telescopic assembly (the same as the structure of the telescopic assemblies, which is not described in detail) at the lower end of the outer tube 3 can extend out from the locking hole 811, and a limiting function is achieved. A joint 813 is fixedly connected above the locking hole 811, and the structure of the joint 813 is also the same as that of the joint 5, and is not described again.

When the selfie stick is completely unfolded, the convex part of the second telescopic component penetrates through the open hole 11 and is clamped into the open slot 21 of the middle pipe 2, the convex part 42 of the telescopic component 4 is clamped into the second open slot 24 of the middle pipe 2 and extends out of the positioning hole 34 of the outer pipe 3, the stable supporting and limiting effect is formed in the length direction, and the larger axial external force can be borne.

Of course, the outer tube 3 and the middle tube 2 can be independently contracted, the middle tube 2 and the inner tube 1 can also be independently contracted, as long as the unlocking convex part 812 extending out of the lower tube 81 is extruded into the tube to realize unlocking, and at the moment, any two adjacent tube bodies can realize independent control of contraction or stretching.

When the telescopic rod needs to be retracted, external force is only required to be applied to press the unlocking convex part 812 to extrude the unlocking convex part into the lower pipe 81. The other telescopic rods are contracted as shown in fig. 10-13, and the contraction of the inner tube 1, the middle tube 2 and the outer tube 3 is described as an example, firstly, the lower tube 81 continues to move upwards to make the joint 813 contact with the convex part 42 of the telescopic assembly 4 at the upper end of the outer tube 3, and the convex part 42 is pressed along the inclined surface 421 of the convex part 42, so that the convex part 42 falls into the outer tube 3 after moving and contracting inwards in the radial direction;

the outer tube 3 continues to move upwards to make the joint 5 contact with the convex part of the second telescopic assembly at the upper end of the middle tube 2, the driving surface 31 contacts the inclined surface 421 first (for convenience of description, the number of the second telescopic assembly is the same as that of the telescopic assembly), that is, point a in fig. 10 is the initial contact point, and presses the convex part 42 along the inclined surface 421, so that the convex part 42 moves inwards in the radial direction and falls into the driving groove 33 after contracting;

as shown in fig. 11, the end surface of the outer tube 3 continues to press the protrusion 42 along the inclined surface 421, i.e., the point B in fig. 9 is used as the initial contact point, so that the protrusion 42 continues to move in the radial direction;

as shown in fig. 12, the side wall of the middle tube 2, especially the upper end surface of the slot 21, continues to press the protrusion 42 along the inclined surface 421, i.e. using point C in fig. 10 as the initial contact point, so that the protrusion 42 continues to move in the radial direction until the protrusion 42 falls into the middle tube 2 and axially translates against the inner wall of the middle tube 2 as shown in fig. 13, thereby achieving the axial folding and contraction of the inner tube 1, the middle tube 2 and the outer tube 3.

When the inner tube 1, the middle tube 2 and the outer tube 3 are in the fully contracted state, they are not stretched freely due to the pressing action of the respective protrusions against the inner wall of the respective tube bodies and the locking of the unlocking protrusions 812 on the lower tube 81.

From rapping bar can include more than multisection body, and the connection between the body is the same with joint and telescopic component's cooperation structure, for the repetitive unit.

The selfie stick is particularly suitable for being used in combination with a mini-order and a mobile phone when people go out for shooting, and is convenient to use and high in flexibility.

EXAMPLE III

As shown in fig. 14 to 17, a lamp holder includes a telescopic leg 011, a connecting base 012 connectable to a photographing lamp, and a lifting mechanism 013 provided between the telescopic leg 011 and the connecting base 012; the structure of the lifting mechanism 013 is the same as that of the telescopic rod in the second embodiment, and is not described again.

Example four

As shown in fig. 18 and 19, a tripod for photographing includes a platform 021 to which a photographing apparatus is connectable, a first leg pipe 022, a second leg pipe 023, and a third leg pipe 024 rotatably connected to the platform 021; the structure of the first foot tube 022 is the same as that of the telescopic rod in the second embodiment, or the structure of the second foot tube 023 is the same as that of the telescopic rod in the second embodiment, or the structure of the third foot tube 024 is the same as that of the telescopic rod in the second embodiment, or the structures of the first foot tube 022, the second foot tube 023 and the third foot tube 024 are all the same as that of the telescopic rod, and detailed structures are not repeated.

The foregoing detailed description is intended to illustrate and not limit the invention, which is intended to be within the spirit and scope of the appended claims, and any changes and modifications that fall within the true spirit and scope of the invention are intended to be covered by the following claims.

Claims

1. A telescoping structure, characterized by: comprises an inner pipe (1), an outer pipe (3) sleeved and connected with the inner pipe (1), a telescopic component (4) connected with the inner tube (1) and a driving surface (31) arranged on the outer tube (3), wherein the telescopic component (4) comprises an elastic piece (41), and a convex part (42) with one end abutting against the elastic part (41) and the other end extending from the side wall of the inner tube (1), the convex part (42) is provided with an inclined surface (421), the driving surface (31) and the end surface (32) of the outer tube (3) are positioned on different horizontal levels, when the inner tube (3) moves towards the outer tube (3), after the driving surface (31) presses the convex part (42) to move inwards along the inclined surface (421), the outer tube (3) continues to press the convex portion (42) along the inclined surface (421), so that the convex part (42) is translated against the inner wall of the outer pipe (3), and the inner pipe (1) and the outer pipe (3) are folded and contracted along the axial direction.

2. The telescoping structure of claim 1, wherein: the driving surface (31) is a side wall of a driving groove (33), the driving groove (33) extends along the length direction of the outer pipe (3), and the driving groove is provided with an opening along the radial direction and the length direction of the outer pipe (3).

3. The telescoping structure of claim 2, wherein: the end part of the outer pipe (3) is connected with a joint (5), the end part of the joint (5) protrudes from the inner wall along the radial direction to form a flange (51), the driving groove (33) is of a groove structure which penetrates through the flange (51) along the axial direction, and the driving surface (31) is a side wall of the groove structure.

4. The telescoping structure of claim 1, wherein: the convex part (42) comprises a left convex part and a right convex part which are symmetrically arranged along the radial direction, two ends of the elastic part (41) are respectively abutted against the left convex part and the right convex part, the side wall of the inner tube (1) is provided with a left opening and a right opening which are opposite, and the driving surface (31) comprises a left driving surface matched with the left convex part and a right driving surface matched with the right convex part.

5. The telescoping structure of claim 1, wherein: the inclined surface (421) inclines from the direction close to the outer pipe (3) to the other side and from inside to outside.

6. The telescoping structure of claim 1, wherein: the end of the inner tube (1) is connected with a fixed seat (6), one end of an elastic piece (41) is abutted to the fixed seat (6), a convex portion (42) penetrates through the fixed seat (6) and then extends out of the open hole (11), and the outer wall of the convex portion (42) forms a step-shaped structure (422) which can be abutted to the inner wall of the inner tube (1).

7. A selfie stick comprises a clamping device (7) used for clamping shooting equipment, a telescopic rod connected with the clamping device (7) in a rotating mode, and a handheld portion (8), wherein the telescopic rod at least comprises a middle pipe (2), an outer pipe (3) sleeved outside the middle pipe (2), a telescopic component (4) connected with the middle pipe (2), and a driving surface (31) arranged on the outer pipe (3), the telescopic component (4) comprises an elastic piece (41) and a convex portion (42) with one end abutting against the elastic piece (41) and the other end extending out of a second groove (24) in the side wall of the middle pipe (2), an inclined surface (421) is formed on the convex portion (42), the driving surface (31) and the end surface (32) of the outer pipe (3) are located at different horizontal heights, when the middle pipe (2) moves towards the outer pipe (3), the driving surface (31) extrudes the convex portion (42) along the inclined surface (421) to retract inwards, the outer pipe (3) continues to extrude the convex part (42) along the inclined surface (421), so that the convex part (42) is pushed against the inner wall of the outer pipe (3) to move horizontally, and the middle pipe (2) and the outer pipe (3) are folded and contracted along the axial direction.

8. A self-timer stick as recited in claim 7, wherein: the outer tube (3) is connected with a third telescopic assembly which comprises an unlocking convex part (812) which can extend out of the locking hole (811).

9. A self-timer stick as recited in claim 7, wherein: the driving surface (31) is a side wall of a driving groove (33), the driving groove (33) extends along the length direction of the outer pipe (3), and the driving groove is provided with an opening along the radial direction and the length direction of the outer pipe (3); the end part of the outer pipe (3) is connected with a joint (5), the end part of the joint (5) protrudes from the inner wall along the radial direction to form a flange (51), the driving groove (33) is of a groove structure which penetrates through the flange (51) along the axial direction, and the driving surface (51) is a side wall of the groove structure.

10. The utility model provides a lighting fixture, includes flexible lower margin (011), can with connecting seat (012) that the photography luminaire links to each other, and locate elevating system (013) between flexible lower margin (011) and connecting seat (012), its characterized in that: the lifting mechanism (013) at least comprises a middle pipe (2), an outer pipe (3) sleeved outside the middle pipe (2), a telescopic assembly (4) connected with the middle pipe (2) and a driving surface (31) arranged on the outer pipe (3), wherein the telescopic assembly (4) comprises an elastic piece (41) and a convex part (42) of which one end is abutted to the elastic piece (41) and the other end extends out of a second groove (24) in the side wall of the middle pipe (2), an inclined surface (421) is formed on the convex part (42), the driving surface (31) and the end surface (32) of the outer pipe (3) are positioned on different horizontal heights, when the middle pipe (2) moves towards the outer pipe (3) in the direction, the driving surface (31) extrudes the convex part (42) along the inclined surface (421) to shrink inwards, the outer pipe (3) continuously extrudes the convex part (42) along the inclined surface (421), so that the convex part (42) is abutted to the inner wall of the outer pipe (3) to move horizontally, the middle pipe (2) and the outer pipe (3) are axially overlapped and contracted.

11. The lamp holder of claim 10, wherein: the outer tube (3) is connected with a third telescopic assembly which comprises an unlocking convex part (812) which can extend out of the locking hole (811).

12. The lamp holder of claim 10, wherein: the driving surface (31) is a side wall of a driving groove (33), the driving groove (33) extends along the length direction of the outer pipe (3), and the driving groove is provided with an opening along the radial direction and the length direction of the outer pipe (3); the end part of the outer pipe (3) is connected with a joint (5), the end part of the joint (5) protrudes from the inner wall along the radial direction to form a flange (51), the driving groove (33) is of a groove structure which penetrates through the flange (51) along the axial direction, and the driving surface (51) is a side wall of the groove structure.

13. A photographic tripod, includes platform (021) that can link to each other with photographic equipment, rotates first foot pipe (022), second foot pipe (023) and third foot pipe (024) connected in platform (021), its characterized in that: the first foot pipe (022) at least comprises a pipe (2), an outer pipe (3) sleeved outside the middle pipe (2), a telescopic component (4) connected with the middle pipe (2), and a driving surface (31) arranged on the outer pipe (3), wherein the telescopic component (4) comprises an elastic part (41) and a convex part (42) of which one end is abutted to the elastic part (41) and the other end extends out of a second groove (24) on the side wall of the middle pipe (2), an inclined surface (421) is formed on the convex part (42), the driving surface (31) and the end surface (32) of the outer pipe (3) are positioned on different horizontal heights, when the middle pipe (2) moves towards the outer pipe (3), the driving surface (31) extrudes the convex part (42) along the inclined surface (421) to shrink inwards, the outer pipe (3) continuously extrudes the convex part (42) along the inclined surface (421), so that the convex part (42) is abutted to the inner wall of the outer pipe (3) to move horizontally, the middle pipe (2) and the outer pipe (3) are axially overlapped and contracted.

14. A photographic tripod according to claim 13, wherein: the outer tube (3) is connected with a third telescopic assembly which comprises an unlocking convex part (812) which can extend out of the locking hole (811).

15. A photographic tripod according to claim 13, wherein: the driving surface (31) is a side wall of a driving groove (33), the driving groove (33) extends along the length direction of the outer pipe (3), and the driving groove is provided with an opening along the radial direction and the length direction of the outer pipe (3); the end part of the outer pipe (3) is connected with a joint (5), the end part of the joint (5) protrudes from the inner wall along the radial direction to form a flange (51), the driving groove (33) is of a groove structure which penetrates through the flange (51) along the axial direction, and the driving surface (51) is a side wall of the groove structure.