CN216812415U

CN216812415U - Telescopic assembly and telescopic rod

Info

Publication number: CN216812415U
Application number: CN202122419478.6U
Authority: CN
Inventors: 陈伟豪
Original assignee: Shenzhen Luxury United Technology Co ltd
Current assignee: Shenzhen Luxury United Technology Co ltd
Priority date: 2021-10-08
Filing date: 2021-10-08
Publication date: 2022-06-24
Anticipated expiration: 2031-10-08

Abstract

The utility model provides a telescopic assembly and a telescopic rod, belonging to the technical field of supporting devices, wherein the telescopic assembly comprises a first telescopic pipe, a second telescopic pipe and a first friction piece, the first telescopic pipe is slidably sleeved on the second telescopic pipe, the first friction piece is arranged on the second telescopic pipe, and the first friction piece is extruded between the first telescopic pipe and the second telescopic pipe so as to ensure that the first telescopic pipe can be kept on the second telescopic pipe; in the process that the first extension pipe slides relative to the second extension pipe, when the first friction piece slides to the first area of the first outer wall, the first surface is only in extrusion contact with the first base surface; when the first friction member is slidable to the second region of the first outer wall, the first surface is in pressing contact with the first protrusion. The utility model discloses a flexible subassembly of embodiment when the heavier power consumption main part of flexible subassembly extra load for first friction piece slides to the second region of first outer wall, makes first surface and first protruding extrusion contact, makes this flexible subassembly still keep effectual user state.

Description

Telescopic component and telescopic rod

Technical Field

The utility model relates to the technical field of supporting devices, in particular to a telescopic assembly and a telescopic rod.

Background

The supporting device is a device for supporting electric main bodies such as a fan head, a lamp, a shooting terminal and a mobile phone, and generally comprises a telescopic rod so as to be convenient for adjusting the use height of the electric main body, the telescopic rod comprises at least one telescopic component, the telescopic component comprises a first telescopic pipe and a second telescopic pipe, and the first telescopic pipe is sleeved on the second telescopic pipe.

After the telescopic assembly in the prior art is used for a long time or times, or when the telescopic assembly bears a heavy electric main body, or when the telescopic assembly bears a large pulling force, the first telescopic pipe is easy to relatively slide relative to the second telescopic pipe, and the first telescopic pipe is not easy to be kept by the second telescopic pipe.

SUMMERY OF THE UTILITY MODEL

In view of the drawbacks and deficiencies of the prior art, a first object of the present invention is to provide a telescopic assembly.

The embodiment of the utility model provides a telescopic assembly, which comprises a first telescopic pipe, a second telescopic pipe and a first friction piece, wherein the first telescopic pipe is slidably sleeved on the second telescopic pipe; the first friction piece is provided with a first surface which is in extrusion contact with the first extension pipe, the first extension pipe is provided with a first outer wall which is in extrusion contact with the first surface, the first outer wall comprises a first base surface and a first bulge which is convexly arranged on the first base surface, the first friction piece slides along the first outer wall in the process that the first extension pipe slides relative to the second extension pipe, and when the first friction piece slides to a first area of the first outer wall, the first surface is only in extrusion contact with the first base surface; the first surface is in pressing contact with the first protrusion when the first friction member is slidable to the second region of the first outer wall.

Preferably, the first protrusion has a first transition surface over which an end of the first friction member may slide during sliding of the first friction member to the second region; alternatively, the first friction member has a second transition surface, and the first protrusion may slide over the second transition surface of the first friction member during sliding of the first friction member to the second region.

Preferably, the first bulge is dome-shaped, and the first bulge and the first base surface are in smooth transition.

Preferably, the first friction piece is in a shell shape, the first friction piece is detachably arranged on the inner wall of the second extension tube, the inner wall of the second extension tube is provided with a first positioning hole, the first friction piece is provided with a first positioning protrusion matched with the first positioning hole, and the first positioning protrusion is inserted into the first positioning hole; the second extension tube is provided with a first deformation space which is used as a yielding space of the first positioning bulge when the first bulge extrudes the first friction piece; when the first friction piece slides to the first position of the second area, the first protrusion corresponds to the first positioning hole.

Preferably, the first positioning hole extends along a first direction, a first projection plane is perpendicular to the first direction, and the projection of the first positioning hole on the first projection plane contains the projection of the first protrusion on the first projection plane.

Preferably, the first bulge is in a dome shape, the first positioning hole is in a cylindrical shape, and the diameter of the first positioning hole is larger than that of the first bulge.

Preferably, the first friction piece is further provided with a second surface opposite to the first surface, the second surface is in pressing contact with the inner wall of the second telescopic pipe, and the first positioning protrusion is arranged on the second surface.

Preferably, the number of the first protrusions is two, the number of the first positioning holes is two, and the two first positioning holes are respectively arranged on two opposite sides of the second telescopic pipe.

Preferably, the first telescopic pipe is a stretching body, the second telescopic pipe is a stretching body, the first telescopic pipe and the second telescopic pipe are coaxially sleeved, the two first positioning holes are arranged in a central symmetry manner about the axis of the telescopic assembly, and the two first protrusions are arranged in a central symmetry manner about the axis of the telescopic assembly.

Preferably, the first friction piece is provided with a first limiting protrusion, and the first limiting protrusion is attached to the end wall of the second telescopic pipe.

Preferably, the first telescopic pipe is in coaxial clearance fit with the second telescopic pipe, and the thickness of the first bulge is smaller than the clearance between the first telescopic pipe and the second telescopic pipe.

Preferably, the telescopic assembly further comprises a second friction member disposed on the second telescopic tube, the second friction member is pressed between the first telescopic tube and the second telescopic tube, when the telescopic assembly is at its maximum length, the first friction member slides to a first position of the second area, and the first friction member and the second friction member block each other.

Preferably, the first protrusion is strip-shaped, extends along the circumferential direction of the first telescopic pipe, and is in gradual transition with the first base surface along the sliding direction of the first friction piece.

The embodiment of the utility model also provides a telescopic rod which is characterized in that the telescopic rod is provided with at least two telescopic pipes which are sequentially sleeved, wherein any two adjacent telescopic pipes are respectively a first telescopic pipe and a second telescopic pipe of the telescopic assembly.

The utility model discloses a flexible subassembly, additionally be equipped with first arch at first flexible pipe, after flexible subassembly has used longer time or more number of times, perhaps when flexible subassembly extra load is heavier with the electric main part, perhaps when flexible subassembly undertakes great pulling force, the first flexible pipe of slidable flexible subassembly, make first friction member slide to the second region of first outer wall, make first surface and first protruding extrusion contact, thereby make the damping force between first flexible pipe and the flexible pipe of second obtain extra the reinforcing, make this flexible subassembly still keep effectual user state.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of an implementation of a retraction assembly in accordance with an embodiment of the present invention;

FIG. 2 is a front view of the retraction assembly shown in FIG. 1;

FIG. 3 is a cross-sectional view of the retraction assembly shown in FIG. 2 taken along line A-A;

FIG. 4 is an enlarged view of the structure at B in the retraction assembly shown in FIG. 3;

FIG. 5 is an enlarged view of the structure at C of the structure shown in FIG. 4;

FIG. 6 is a schematic view showing a state where the first friction member approaches the first protrusion in the structure shown in FIG. 5;

FIG. 7 is an enlarged view of the structure shown in FIG. 6 at D;

FIG. 8 is a schematic diagram of another implementation of the structure shown in FIG. 6;

FIG. 9 is an enlarged view of the structure shown in FIG. 8 at structure F;

FIG. 10 is a schematic view of the retraction assembly shown in FIG. 3 with the first friction member in compressive contact with only the first base surface;

FIG. 11 is an enlarged view of the structure shown in FIG. 10 at retraction assembly G;

FIG. 12 is an enlarged view of the structure of the retraction assembly H shown in FIG. 10;

FIG. 13 is a front elevational view of the first telescoping tube of the telescoping assembly of FIG. 2;

figure 14 is an enlarged view of the structure at I in the first telescopic tube shown in figure 13;

figure 15 is a schematic perspective view of the first telescopic tube shown in figure 13;

figure 16 is an enlarged view of the structure at J in the first bellows shown in figure 15;

FIG. 17 is a perspective view of the first friction member of the construction shown in FIG. 4;

FIG. 18 is a front elevational view of the first friction member illustrated in FIG. 17;

FIG. 19 is an enlarged view of the structure at K in the first friction member shown in FIG. 18;

FIG. 20 is a side view of the first friction member shown in FIG. 18;

FIG. 21 is a schematic view of the second telescoping tube in the telescoping assembly of FIG. 1 engaged with the first friction member;

FIG. 22 is an enlarged view of the structure at L in the structure shown in FIG. 21;

FIG. 23 is a schematic view of the engagement of the first telescoping tube with the second friction member of the telescoping assembly of FIG. 1;

FIG. 24 is an enlarged view of the structure shown in FIG. 23 at M;

FIG. 25 is a perspective view of the second friction member of the construction shown in FIG. 23;

FIG. 26 is a schematic structural diagram of another implementation of a retraction assembly according to an embodiment of the present invention;

FIG. 27 is a schematic view of the telescoping assembly of FIG. 26 taken along line N-N;

FIG. 28 is an enlarged view of the structure at P in the retraction assembly shown in FIG. 27;

FIG. 29 is an enlarged view of the structure at Q in the structure shown in FIG. 28;

FIG. 30 is an enlarged view of the structure at R in the structure shown in FIG. 29;

FIG. 31 is a perspective view of a first telescoping tube of the telescoping assembly shown in FIG. 26;

figure 32 is a front view of the first telescopic tube shown in figure 31;

FIG. 33 is a schematic structural diagram of another implementation of a retraction assembly of an embodiment of the present invention;

FIG. 34 is an enlarged view of the structure at the telescoping assembly S shown in FIG. 33;

FIG. 35 is an enlarged view of the structure shown in FIG. 34 at T;

FIG. 36 is a schematic view of the retraction assembly shown in FIG. 33 with the second friction member in compressive contact with only the second base surface;

FIG. 37 is an enlarged view of the structure at U in the retraction assembly shown in FIG. 36;

FIG. 38 is an enlarged view of the structure at V1 in the structure shown in FIG. 37;

FIG. 39 is an enlarged view of the structure at V2 in the structure shown in FIG. 37;

FIG. 40 is an enlarged view of the structure at w in the structure shown in FIG. 39;

FIG. 41 is a schematic diagram of another implementation of the structure shown in FIG. 39;

FIG. 42 is an enlarged view of the structure at X in the structure shown in FIG. 41;

FIG. 43 is a schematic structural view of a telescoping pole of an embodiment of the utility model;

fig. 44 is a schematic structural diagram of an electric device according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment as necessary without making a contribution thereto after reading the present specification, but all are protected by patent laws within the scope of the claims of the present invention.

Referring to fig. 1 to 25 or fig. 26 to 32, an embodiment of the present invention provides a telescopic assembly 1, including a first telescopic tube 100, a second telescopic tube 200 and a first friction member 300, wherein the first telescopic tube 100 is slidably sleeved on the second telescopic tube 200, the first friction member 300 is disposed on the second telescopic tube 200, and the first friction member 300 is pressed between the first telescopic tube 100 and the second telescopic tube 200 to enable the first telescopic tube 100 to be held on the second telescopic tube 200; the first friction member 300 is provided with a first surface 301 which is in pressing contact with the first extension tube 100, the first extension tube 100 is provided with a first outer wall 110 which is in pressing contact with the first surface 301, the first outer wall 110 comprises a first base surface 111 and a first protrusion 112 which is convexly arranged on the first base surface 111, the first friction member 300 slides along the first outer wall 110 in the sliding process of the first extension tube 100 relative to the second extension tube 200, and when the first friction member 300 slides to a first area of the first outer wall 110, the first surface 301 is only in pressing contact with the first base surface 111; when the first friction member 300 is slidable to the second region of the first outer wall 110, the first surface 301 is in pressing contact with the first protrusion 112.

The utility model discloses a flexible subassembly 1 of embodiment, at first flexible pipe 100 extra be equipped with first arch 112, after flexible subassembly 1 has used longer time or more number of times, or when flexible subassembly 1 extra load is heavier with electric main part 20, or when flexible subassembly 1 undertakes great pulling force, the first flexible pipe 100 of flexible subassembly 1 can slide, make first friction member 300 slide to the second region of first outer wall 110, make first surface 301 and first protruding 112 extrusion contact, thereby make the damping force between first flexible pipe 100 and the flexible pipe 200 of second obtain extra the reinforcing, make this flexible subassembly 1 still keep effectual user state.

Of course, when the telescopic assembly 1 is used for a short time or a few times, or when the telescopic assembly 1 is a light electric main body 20, or when the telescopic assembly 1 bears a small pulling force, the first friction member 300 is in the first region or the second region, and the telescopic assembly 1 still maintains an effective use state.

Illustratively, the first extension tube 100 and the second extension tube 200 are both made of metal, such as stainless steel, aluminum alloy, and the like.

Illustratively, the first friction member 300 is made of a plastic material, such as rubber, silicone, mild steel, or the like.

Illustratively, the second extension tube 200 is a hollow tube, and the first extension tube 100 can be a hollow tube or a solid tube.

Illustratively, the first extension tube 100 and the second extension tube 200 are both straight tubes, and the first extension tube 100 and the second extension tube 200 are coaxially sleeved; or, the first extension tube 100 and the second extension tube 200 are both bent tubes, and the first extension tube 100 is slidably sleeved on the second extension tube 200.

Illustratively, the first friction member 300 may be integrally or detachably provided to the second extension tube 200;

exemplarily, the first telescopic tube 100 is retained in the second telescopic tube 200, which means that the first telescopic tube 100 can be retained in the second telescopic tube 200 without relative sliding with respect to the second telescopic tube 200, for example, in the contraction direction, and the first telescopic tube 100 can be retained in the second telescopic tube 200, for example, in the extension direction.

Exemplarily, referring to fig. 11, when the first friction member 300 slides to the first region of the first outer wall 110, the first surface 301 is in pressing contact with only the first base surface 111, the first surface 301 is not in pressing contact with the first protrusion 112, and the first region refers to a set of positions of the first outer wall 110.

For example, when the first friction member 300 can slide to the second region of the first outer wall 110, the first surface 301 is in pressing contact with the first protrusion 112, and in this state, the first surface 301 can also be in pressing contact with the first base surface 111; the second region refers to a set of locations of the first outer wall 110; obviously, the first protrusion 112 is within the second region.

Referring to fig. 7, or fig. 9, or fig. 30, etc., in some implementations of embodiments of the present invention, the first protrusion 112 has a first transition surface 112a, and during sliding of the first friction member 300 to the second region, an end of the first friction member 300 can slide over the first transition surface 112 a; alternatively, the first friction member 300 may have a second transition surface 302, and the first protrusions 112 may slide over the second transition surface 302 of the first friction member 300 during sliding of the first friction member 300 to the second region.

The above arrangement is advantageous in that the first friction member 300 is easily slid into the second region in pressing contact with the first protrusions 112.

Illustratively, the first transition surface 112a is a thickest contact portion connecting with the first base surface 111 on one side and the first protrusion 112 on the other side, the thickest contact portion is a thickest portion of the first protrusion 112 which is in pressing contact with the first friction member 300 and is opposite to the first base surface 111, and the thickest contact portion is not necessarily the thickest portion of the first protrusion 112, for example, when the first friction member 300 does not completely cover the first protrusion 112 during the movement of the first friction member;

for example, the first transition surface 112a smoothly transitions with the first base surface 111, or the first transition surface 112a gradually transitions with the first base surface 111 (the height of the first transition surface 112a relative to the first base surface 111 gradually changes from zero, and the height direction is perpendicular to the sliding direction of the first friction member 300); the first transition surface 112a smoothly transitions to the thickest contact portion, or the first transition surface 112a gradually transitions to the thickest contact portion (the height of the first transition surface 112a relative to the thickest contact portion gradually changes from zero, and the height direction is perpendicular to the sliding direction of the first friction member 300); also, the first transition surface 112a itself is a smooth surface or a flat surface.

Other exemplary first transition surfaces 112a are any shape that does not impede sliding movement of first friction member 300.

Illustratively, the second transition surface 302 is connected to the end surface of the first friction member 300 on one side and to the inner surface of the first friction member 300 on the other side. For example, the second transition surface 302 smoothly transitions to the end surface of the first friction member 300, or the second transition surface 302 gradually transitions to the end surface of the first friction member 300 (the height of the second transition surface 302 relative to the end surface of the first friction member 300 gradually changes from zero, and the height direction is perpendicular to the sliding direction of the first friction member 300); the second transition surface 302 smoothly transitions to the inner surface of the first friction member 300, or the second transition surface 302 gradually transitions to the inner surface of the first friction member 300 (the height of the second transition surface 302 relative to the inner wall surface of the first friction member 300 gradually changes from zero, and the height direction is perpendicular to the sliding direction of the first friction member 300); and the second transition surface 302 itself is a smooth surface or flat surface.

Other exemplary second transition surfaces 302 are any shape that does not impede sliding movement of first friction member 300.

In some implementations of embodiments of the present invention, the first protrusion 112 is dome-shaped, and the first protrusion 112 smoothly transitions with the first base surface 111.

The above arrangement is advantageous in that the first friction member 300 can be easily slid into the second area in press-contact with the first protrusion 112, and the first protrusion 112 can be easily manufactured, for example, when the first telescopic tube 100 is made of metal, the first protrusion 112 can be easily manufactured by punching.

Referring to fig. 5 and the like, in some implementations of the embodiment of the present invention, the first friction member 300 is in a shell shape, the first friction member 300 is detachably disposed on an inner wall of the second extension tube 200, the inner wall of the second extension tube 200 is provided with a first positioning hole 201, the first friction member 300 is provided with a first positioning protrusion 310 matched with the first positioning hole 201, and the first positioning protrusion 310 is inserted into the first positioning hole 201; the second extension tube 200 is provided with a first deformation space 202 communicated with the first positioning hole 201, and the first deformation space 202 is used as a yielding space of the first positioning protrusion 310 when the first protrusion 112 extrudes the first friction member 300; when the first friction member 300 slides to the first position of the second region, the first protrusion 112 corresponds to the first positioning hole 201.

The advantage of the above arrangement is that when the first friction member 300 slides to the first position, the first protrusion 112 presses the first friction member 300, and since the first protrusion 112 corresponds to the first positioning hole 201, the first friction member 300 is convenient to deform, thereby avoiding the first protrusion 112 from pressing the first friction member 300 for a long time, which may cause the first friction member 300 to be damaged. Also, the first positioning hole 201 is also used to mount the first friction member 300 to the inner wall of the second telescopic tube 200, so that the telescopic assembly 1 is simple and compact in structure.

Illustratively, the first positioning hole 201 penetrates through the outer wall of the second extension tube 200, and the first deformation space 202 is a space located outside the second extension tube 200 and communicated with the first positioning hole 201.

Illustratively, the first positioning hole 201 penetrates through the outer wall of the second extension tube 200, and the first deformation space 202 is located in the first positioning hole 201;

illustratively, the first positioning hole 201 is a blind hole, and the first deformation space 202 is located in the first positioning hole 201.

For example, the first friction member 300 may be a shell-shaped cylinder, and the first friction member 300 is integrally sleeved on the inner wall of the second extension tube 200; for another example, the first friction element 300 may be a plurality of shell-shaped plates, for example, the shell-shaped plates are uniformly distributed on the inner wall of the second extension tube 200.

Referring to fig. 5 and the like, in some implementations of the embodiment of the present invention, the first positioning hole 201 extends along a first direction, and has a first projection plane perpendicular to the first direction, and when the first protrusion 112 corresponds to the first positioning hole 201, a projection of the first positioning hole 201 on the first projection plane accommodates a projection of the first protrusion 112 on the first projection plane.

The above arrangement has an advantage of facilitating the deformation of the first friction member 300.

Referring to fig. 5 and the like, in some implementations of embodiments of the present invention, first boss 112 is dome-shaped, first locating hole 201 is cylindrical, and a diameter of first locating hole 201 is greater than a diameter of first boss 112.

The above arrangement is advantageous in that the first friction member 300 is easily deformed when the first protrusion 112 is opposed to the first seating hole 201.

The diameter of first projection 112 refers to the diameter of the outer edge of first projection 112.

Referring to FIG. 5, etc., in some implementations of an embodiment of the present invention, the first friction member 300 further has a second surface 303 opposite to the first surface 301, the second surface 303 is in pressing contact with an inner wall of the second telescopic tube 200, and the first positioning projection 310 is provided at the second surface 303.

Illustratively, the first friction member 300 is secured to the second telescoping tube 200.

Referring to fig. 13, 14, 21, etc., in some implementations of embodiments of the present invention, the number of the first protrusions 112 is two, the number of the first positioning holes 201 is two, and the two first positioning holes 201 are respectively disposed at opposite sides of the second extension tube 200.

This has the advantage that the first telescopic tube 100 is more stably retained in the second telescopic tube 200 when the first friction member 300 is moved to the second region.

Other exemplary numbers of the first protrusions 112 may be 3, 4, etc.

Referring to fig. 1, 15, 21, 23, etc., in some implementations of embodiments of the present invention, the first telescopic tube 100 is a stretching body, the second telescopic tube 200 is a stretching body, the first telescopic tube 100 and the second telescopic tube 200 are coaxially sleeved, the two first positioning holes 201 are arranged in a central symmetry manner with respect to an axis of the telescopic assembly 1, and the two first protrusions 112 are arranged in a central symmetry manner with respect to an axis of the telescopic assembly 1.

Referring to fig. 5, 21, 22, etc., in some implementations of embodiments of the present invention, the first friction member 300 is provided with a first limit protrusion 320, and the first limit protrusion 320 is attached to the end wall of the second telescopic tube 200.

The advantage of this arrangement is that the first friction member 300 can be more stably mounted on the second telescopic tube 200 by the cooperation of the first positioning protrusion 310, the first limiting protrusion 320 and the second telescopic tube 200.

Referring to figures 1, 5, etc., in some implementations of an embodiment of the present invention, the first telescoping tube 100 is coaxially clearance fitted with the second telescoping tube 200, and the thickness of the first projection 112 is less than the clearance between the first telescoping tube 100 and the second telescoping tube 200.

This arrangement has the advantage of facilitating the pressing contact of the first protrusions 112 with the first friction member 300.

Illustratively, the gap between the first extension tube 100 and the second extension tube 200 is constant, e.g., the first extension tube 100 and the second extension tube 200 are cylindrical tubes, the outer diameter of the first extension tube 100 is r1, the inner diameter of the second extension tube 200 is r2, and the gap between the first extension tube 100 and the second extension tube 200 is r2-r1.

Other examples are where the gap between the first telescoping tube 100 and the second telescoping tube 200 is variable.

Referring to fig. 5, in some implementations of the embodiment of the present invention, the telescopic assembly 1 further includes a second friction member 400 disposed on the second telescopic tube 200, the second friction member 400 is pressed between the first telescopic tube 100 and the second telescopic tube 200, when the length of the telescopic assembly 1 is the longest, the first friction member 300 slides to the first position of the second area, and the first friction member 300 and the second friction member 400 block each other.

The advantage of this arrangement is that, during the use of the telescopic assembly 1, the first friction member 300 can be conveniently moved to the first position, i.e. when the first telescopic tube 100 is extended relative to the second telescopic tube 200, the first friction member 300 does not have to be intentionally slid to the first position of the second region, and only the first telescopic tube 100 needs to be pulled to a state where the first friction member 300 and the second friction member 400 block each other, and at this time, the length of the telescopic assembly 1 is the longest, which is the length of the telescopic assembly 1 that can be used most.

Illustratively, the second friction member 400 is made of a plastic material, such as rubber, silicone, mild steel, or the like.

Illustratively, the second friction member 400 can be integrally or detachably provided to the second telescopic tube 200.

Illustratively, the second friction member 400 is in a shell shape, the second friction member 400 is detachably disposed on the outer wall of the first extension tube 100, the outer wall of the first extension tube 100 is provided with a second positioning hole 103, the second friction member 400 is provided with a second positioning protrusion 410 matching with the second positioning hole 103, and the second positioning protrusion 410 is inserted into the second positioning hole 103.

Illustratively, the second friction member 400 may be a shell-shaped cylinder, and the second friction member 400 is integrally sleeved on the outer wall of the first extension tube 100; for another example, the second friction element 400 may be a plurality of shell-shaped plates, for example, the plurality of shell-shaped plates are uniformly distributed on the outer wall of the first extension tube 100.

Referring to figures 4, 23, 24, 25, etc., in some implementations of embodiments of the present invention, the second friction member 400 is provided with a second limit projection 420, the second limit projection 420 abutting an end wall of the first telescoping tube 100.

The advantage of this arrangement is that the second friction member 400 can be more stably arranged on the first telescopic tube 100 by the cooperation of the second positioning protrusion 410, the second limiting protrusion 420 and the first telescopic tube 100.

Referring to fig. 26 to 32, in some implementations of the embodiment of the present invention, the first protrusion 112 is a bar shape, the first protrusion 112 extends along the circumferential direction of the first telescopic tube 100, and the first protrusion 112 gradually transitions with the first base surface 111 along the sliding direction of the first friction member 300.

Namely, the height of the first protrusion 112 relative to the first base surface 111 gradually changes from zero, and the height direction is perpendicular to the sliding direction of the first friction member 300.

The above arrangement is advantageous in that the sliding of the first friction member 300 into the second region where the first protrusions 112 are in pressing contact is facilitated.

In the above described implementation, the first bellows 100 is circumferentially fixed relative to the second bellows 200.

Illustratively, the first friction member 300 is fixed with respect to the second extension tube 200, and the first friction member 300 is fixed circumferentially with respect to the first extension tube 300 (e.g., the first friction member 300 is provided with a sliding projection and the first extension tube 300 is provided with a matching sliding groove along the sliding direction of the first friction member 300, or the first friction member 300 is provided with a sliding groove and the first extension tube 300 is provided with a matching sliding projection along the sliding direction of the first friction member 300), so that the second extension tube 200 is fixed circumferentially with respect to the first extension tube 100.

Illustratively, the second friction member 400 is fixed with respect to the first telescopic tube 100, and the second friction member 400 is circumferentially fixed with respect to the second telescopic tube 200 (for example, the second friction member 400 is provided with a sliding projection and the second telescopic tube 200 is provided with a matching sliding groove along the sliding direction of the second friction member 400, or the second friction member 400 is provided with a sliding groove and the second telescopic tube 200 is provided with a matching sliding projection along the sliding direction of the second friction member 400), and the sliding groove and the sliding projection are matched, so that the second telescopic tube 200 is circumferentially fixed with respect to the first telescopic tube 100.

Illustratively, the first extension tube 100 is provided with a sliding groove and the second extension tube 200 is provided with a matching sliding projection (or, the first extension tube 100 is provided with a sliding projection and the second extension tube 200 is provided with a matching sliding groove), the sliding groove and the sliding projection cooperating such that the second extension tube 200 is circumferentially fixed relative to the first extension tube 100.

Illustratively, the first extension tube 100 is a prism tube, the second extension tube 200 is a matching prism tube, and the first extension tube 100 is slidably sleeved with the second extension tube 200, so that the first extension tube 100 is circumferentially fixed relative to the second extension tube 200.

Referring to fig. 33-42, the present invention further provides a telescopic assembly 1, comprising a first telescopic tube 100, a second telescopic tube 200 and a second friction member 400, wherein the first telescopic tube 100 is slidably sleeved on the second telescopic tube 200, the second friction member 400 is disposed on the first telescopic tube 100, and the second friction member 400 is squeezed between the first telescopic tube 100 and the second telescopic tube 200 to keep the first telescopic tube 100 in the second telescopic tube 200; the second friction member 400 has a third surface 401 in pressing contact with the second extension tube 200, the second extension tube 200 has a second inner wall 210 in pressing contact with the third surface 401, the second inner wall 210 comprises a second base surface 211 and a second protrusion 212 protruding from the second base surface 211, the second friction member 400 slides along the second inner wall 210 during the sliding of the first extension tube 100 relative to the second extension tube 200, and the third surface 401 only comes in pressing contact with the second base surface 211 when the second friction member 400 slides to a third area of the second inner wall 210; when the second friction member 400 slides to the fourth region of the second inner wall 210, the third surface 401 is in press-contact with the second protrusion 212.

The utility model discloses a flexible subassembly 1 of embodiment, additionally be equipped with the second arch 212 at the flexible pipe 200 of second, after flexible subassembly 1 has been used longer time or number of times, or when the heavier power consumption main part 20 of flexible subassembly 1 extra load, or when flexible subassembly 1 undertakes great pulling force, the first flexible pipe 100 of slidable flexible subassembly 1, make the fourth region of second friction piece 400 slip second inner wall 210, make third surface 401 and the protruding 212 extrusion contact of second, thereby make the damping force between first flexible pipe 100 and the flexible pipe 200 of second obtain extra the reinforcing, make this flexible subassembly 1 still keep effectual user state.

Of course, when the telescopic assembly 1 is used for a short time or a few times, or when the telescopic assembly 1 is a light electric main body 20, or when the telescopic assembly 1 bears a small pulling force, the second friction member 400 is in the third region or the fourth region, and the telescopic assembly 1 still maintains an effective use state.

Illustratively, the second friction member 400 is supported by a plastic material, such as rubber, silicone, mild steel, or the like.

Illustratively, the second friction member 400 may be integrally or detachably provided to the second telescopic tube 200.

Exemplarily, the first telescopic tube 100 is retained in the second telescopic tube 200, which means that the first telescopic tube 100 is not slid with respect to the second telescopic tube 200, for example, in a contraction direction, the first telescopic tube 100 is retained in the second telescopic tube 200, for example, in an extension direction, the first telescopic tube 100 is retained in the second telescopic tube 200.

Illustratively, when the second friction member 400 slides to the third area of the second inner wall 210, the third surface 401 is in pressing contact with only the second base surface 211, the third surface 401 is not in pressing contact with the second protrusion 212, and the third area refers to the set of positions of the second inner wall 210.

For example, when the second friction member 400 can slide to the fourth region of the second inner wall 210, the third surface 401 is in pressing contact with the second protrusion 212, and in this state, the third surface 401 can also be in pressing contact with the second base 211; the fourth area refers to the set of locations of first outer wall 110; obviously, the second protrusion 212 is within the fourth region.

Referring to fig. 40 or 42, in some implementations of embodiments of the present invention, the second protrusion 212 has a third transition surface 212a, and one end of the second friction member 400 may slide over the third surface 401 during sliding of the second friction member 400 to the fourth area, or the second friction member 400 has a fourth transition surface 402, and the second protrusion 212 may slide over the fourth transition surface 402 during sliding of the second friction member 400 to the fourth area.

The above arrangement is advantageous in that the second friction member 400 is easily slid into the second region pressed into contact with the second protrusions 212.

Illustratively, the third transition surface 212a is connected to the second base surface 211 on one side and to the thickest contact portion of the second protrusion 212 on the other side, the thickest contact portion is the thickest portion of the second protrusion 212 pressing against the second friction member 400 and opposing to the second base surface 211, and the thickest contact portion of the second protrusion 212 is not necessarily the thickest portion of the second protrusion 212.

For example, the third transition surface 212a smoothly transitions with the second base surface 211, or the third transition surface 212a gradually transitions with the second base surface 211 (the height of the third transition surface 212a relative to the second base surface 211 gradually changes from zero, and the height direction is the moving direction of the second friction member 400); and the third transition surface 212a smoothly transitions with the thickest contact portion of the second protrusion 212, or the third transition surface 212a gradually transitions with the thickest contact portion (the height of the third transition surface 212a relative to the thickest contact portion gradually changes from zero, and the height direction is perpendicular to the moving direction of the second friction piece 400); and, the third transition surface 212a itself is a smooth surface or a flat surface.

Other exemplary third transition surfaces 212a are any shape that does not impede the sliding of second friction member 400.

Illustratively, the fourth transition surface 402 is connected to the end surface of the second friction element 400 on one side and to the third surface 401 of the second friction element 400 on the other side.

Illustratively, the fourth transition surface 402 is in smooth transition with the end surface of the second friction element 400, or the fourth transition surface 402 is in gradual transition with the end surface of the second friction element 400 (the height of the fourth transition surface 402 relative to the end surface of the second friction element 400 is gradually changed from zero, and the height direction is perpendicular to the moving direction of the second friction element 400); and, the third transition surface 212a itself is smooth or planar.

Other exemplary fourth transition surface 402 is any shape that does not impede sliding of second friction member 400.

Referring to fig. 35 and the like, in some implementations of embodiments of the present invention, the second bump 212 is dome-shaped, and the second bump 212 smoothly transitions with the second base surface 211.

The above arrangement is advantageous in that the sliding of the second friction member 400 to the fourth area in press-contact with the second projection 212 is facilitated, and the manufacture of the second projection 212 is facilitated, for example, when the second telescopic tube 200 is made of metal, the second projection 212 can be easily punched.

Referring to fig. 35 and the like, in some implementations of the embodiment of the present invention, the second friction member 400 is in a shell shape, the second friction member 400 is detachably disposed on an outer wall of the first extension tube 100, the outer wall of the first extension tube 100 is provided with a second positioning hole 103, the second friction member 400 is provided with a second positioning protrusion 410 matching with the second positioning hole 103, the second positioning protrusion 410 is inserted into the second positioning hole 103, the first extension tube 100 is provided with a second deformation space 104, the second deformation space 104 is used as a yielding space of the second positioning protrusion 410 when the second protrusion extrudes the second friction member 400, and when the second friction member 400 slides to the second position of the fourth area, the second protrusion 212 corresponds to the second positioning hole 103.

The advantage of the above arrangement is that when the second friction member 400 slides to the second position, the second protrusion 212 presses the second friction member 400, and since the second protrusion 212 corresponds to the second positioning hole 103, the second friction member 400 is deformed, thereby preventing the second protrusion 212 from pressing the second friction member 400 for a long time, which may damage the second friction member 400. Moreover, the second positioning hole 103 is also used for mounting the second friction member 400 on the outer wall of the first telescopic tube 100, so that the telescopic assembly 1 has a simple and compact structure.

Illustratively, the second positioning hole 103 penetrates through the inner wall of the first telescopic tube 100, and the second deformation space 104 is a space located inside the first telescopic tube 100 and communicated with the second positioning hole 103.

Illustratively, the second positioning hole 103 penetrates through the inner wall of the first telescopic tube 100, and the second deformation space 104 is located in the second positioning hole 103.

Illustratively, the second positioning hole 103 is a blind hole, and the second deformation space 104 is located in the second positioning hole 103.

For example, the second friction member 400 may be a shell-shaped cylinder, and the second friction member 400 is a sleeve integrally formed on the outer wall of the first extension tube 100; for another example, the second friction element 400 may be a plurality of shell-shaped plates, for example, the plurality of shell-shaped plates are uniformly distributed on the outer wall of the first extension tube 100.

Referring to fig. 35 and the like, in some implementations of the embodiment of the utility model, the second positioning hole 103 extends along the second direction, and has a second projection plane perpendicular to the second direction, and when the second protrusion 212 corresponds to the second positioning hole 103, the projection of the second positioning hole 103 on the second projection plane accommodates the projection of the second protrusion 212 on the second projection plane.

The above arrangement has an advantage of facilitating the deformation of the second friction member 400.

In some implementations of embodiments of the present invention, the second protrusion 212 is dome-shaped, the second positioning hole 103 is a cylindrical hole, and the diameter of the second positioning hole 103 is larger than the diameter of the second protrusion 212.

The above arrangement has the advantage of facilitating the deformation of the second friction member 400 when the second protrusion 212 is opposite to the second positioning hole 103.

The diameter of the second protrusion 212 refers to the diameter of the outer edge of the second protrusion 212.

In some implementations of the embodiment of the present invention, the second friction member 400 further has a fourth surface 403 opposite to the third surface 401, the fourth surface 403 is in pressing contact with the outer wall of the first telescopic tube 100, and the second positioning protrusion 410 is provided on the fourth surface 403.

Illustratively, the second friction member 400 is secured to the first telescoping tube 100.

Referring to fig. 34 and the like, in some implementations of the embodiment of the present invention, the number of the second protrusions 212 is two, the number of the second positioning holes 103 is two, and the two second positioning holes 103 are respectively disposed on two opposite sides of the second extension tube 200.

This has the advantage that the first telescopic tube 100 is more stably retained in the second telescopic tube 200 when the second friction member 400 is moved to the fourth region.

Other examples may include 3, 4, etc. second protrusions 212.

In some implementations of the embodiment of the present invention, the first telescopic tube 100 is a stretching body, the second telescopic tube 200 is a stretching body, the first telescopic tube 100 and the second telescopic tube 200 are coaxially sleeved, the two second positioning holes 103 are arranged in a central symmetry manner with respect to the axis of the telescopic assembly 1, and the two second protrusions 212 are arranged in a central symmetry manner with respect to the axis of the telescopic assembly 1.

This has the advantage that the first telescopic tube 100 is more stably retained in the second telescopic tube 200 when the second friction member 400 is moved to the fourth zone.

Referring to fig. 35 and the like, in some implementations of embodiments of the present invention, the second friction member 400 is provided with a second stop projection 420, and the second stop projection 420 abuts an end wall of the first telescopic tube 100.

This arrangement has an advantage that the second friction member 400 can be more stably provided to the first telescopic tube 100 by the engagement of the second positioning protrusions 410 and the second limiting protrusion 420 with the first telescopic tube 100.

Referring to figure 35 and the like, in some implementations of an embodiment of the present invention, the first telescoping tube 100 is coaxially clearance fitted with the second telescoping tube 200, and the thickness of the second projection 212 is less than the clearance between the first telescoping tube 100 and the second telescoping tube 200.

This arrangement is advantageous in that the second protrusions 212 are brought into press-contact with the second friction member 400.

Other examples include a variable gap between the first telescoping tube 100 and the second telescoping tube 200.

Referring to fig. 34 and 35, the telescopic assembly 1 further includes a first friction member 300 disposed on the first telescopic tube 100, the first friction member 300 is pressed between the first telescopic tube 100 and the second telescopic tube 200, when the telescopic assembly 1 has the maximum length, the second friction member 400 slides to the second position of the fourth area, and the first friction member 300 and the second friction member 400 block each other.

The advantage of this arrangement is that, during the use of the telescopic assembly 1, the second friction member 400 can be conveniently moved to the second position, that is, when the first telescopic tube 100 is extended relative to the second telescopic tube 200, the second friction member 400 does not have to be intentionally slid to the second position, and only the first telescopic tube 100 needs to be pulled to a state where the first friction member 300 and the second friction member 400 block each other, and at this time, the length of the telescopic assembly 1 is the longest, which is the length of the telescopic assembly 1 that can be used most.

Illustratively, the first friction member 300 may be integrally or detachably provided to the first telescopic tube 100.

Exemplarily, the first friction member 300 is in a shell shape, the first friction member 300 is detachably disposed on an inner wall of the second extension tube 200, the inner wall of the second extension tube 200 is provided with a first positioning hole 201, the first friction member 300 is provided with a first positioning protrusion 310 matched with the first positioning hole 201, and the first positioning protrusion 310 is inserted into the first positioning hole 201.

Referring to fig. 34, the first friction member 300 is exemplarily provided with a first limiting protrusion 320, and the first limiting protrusion 320 is attached to the end wall of the second telescopic tube 200.

Illustratively, the first friction member 300 is a shell-shaped cylinder, and the first friction member 300 is integrally sleeved on the inner wall of the second extension tube 200; for another example, the first friction element 300 may be a plurality of shell-shaped sheet bodies, for example, the plurality of shell-shaped sheet bodies are uniformly distributed on the inner wall of the second extension tube 200.

Referring to fig. 43, an embodiment of the present invention further provides a telescopic rod 10, which includes at least one telescopic assembly 1 as described above, where the telescopic rod 10 has at least two telescopic pipes sleeved in sequence, where any two adjacent telescopic pipes are a first telescopic pipe 100 and a second telescopic pipe 200 of the telescopic assembly 1, respectively.

The utility model discloses a telescopic link 10 of embodiment, be equipped with first arch 112 at first flexible pipe 100 additionally, after telescopic link 10 has been used longer time or more number of times, or when the heavier power consumption main part 20 of telescopic link 10 additional load, or when telescopic link 10 undertakes great pulling force, the first flexible pipe 100 of each flexible subassembly 1 of slidable, make first friction member 300 slide to the second region of first outer wall 110, make first surface 301 and first protruding 112 extrusion contact, thereby make the damping force between the first flexible pipe 100 of each flexible subassembly 1 and the flexible pipe 200 of second obtain extra the reinforcing, thereby make this telescopic link 10 still keep effectual user state.

Referring to fig. 44, an embodiment of the present invention further provides an electric device, including the above-mentioned telescopic rod 10 and an electric main body 20, where the electric main body 20 is mounted on the telescopic rod 10, and the electric main body 20 may be a lamp, a mobile phone, a tablet, a fan heater, or the like.

Further, the electric equipment further comprises a supporting base 30, and the telescopic rod 10 is mounted on the supporting base 30.

The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered by the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A telescopic assembly is characterized by comprising a first telescopic pipe, a second telescopic pipe and a first friction piece, wherein the first telescopic pipe is slidably sleeved on the second telescopic pipe;

the first friction piece is provided with a first surface which is in extrusion contact with the first extension pipe, the first extension pipe is provided with a first outer wall which is in extrusion contact with the first surface, the first outer wall comprises a first base surface and a first bulge which is convexly arranged on the first base surface, and the first friction piece slides along the first outer wall in the process of sliding the first extension pipe relative to the second extension pipe,

the first surface is in pressing contact only with the first base surface when the first friction member slides to the first region of the first outer wall; the first surface is in pressing contact with the first protrusion when the first friction member is slidable to the second region of the first outer wall.

2. The retraction assembly according to claim 1, wherein said first protrusion has a first transition surface over which an end of said first friction member may slide during sliding of said first friction member into said second region;

alternatively, the first friction member has a second transition surface, and the first protrusion may slide over the second transition surface of the first friction member during sliding of the first friction member to the second region.

3. The telescoping assembly of claim 1, wherein the first lobe is dome shaped and the first lobe smoothly transitions from the first base surface.

4. The telescopic assembly of claim 1, wherein the first friction member is shell-shaped, the first friction member is detachably disposed on an inner wall of the second telescopic tube, the inner wall of the second telescopic tube is provided with a first positioning hole, the first friction member is provided with a first positioning protrusion matched with the first positioning hole, and the first positioning protrusion is inserted into the first positioning hole;

the second telescopic pipe is provided with a first deformation space which is used as a yielding space of the first positioning bulge when the first bulge extrudes the first friction piece;

when the first friction piece slides to the first position of the second area, the first protrusion corresponds to the first positioning hole.

5. The telescoping assembly of claim 4, wherein the first alignment hole extends in a first direction and has a first projection plane perpendicular to the first direction, and wherein the projection of the first alignment hole onto the first projection plane accommodates the projection of the first projection onto the first projection plane when the first projection corresponds to the first alignment hole.

6. The telescoping assembly of claim 4, wherein the first boss is dome shaped, the first detent hole is cylindrical, and the diameter of the first detent hole is greater than the diameter of the first boss.

7. The telescoping assembly of claim 4, wherein the first friction member further comprises a second surface opposite the first surface, the second surface being in compressive contact with an inner wall of the second telescoping tube, the first detent projection being provided on the second surface.

8. The telescoping assembly of claim 4, wherein the number of first protrusions is two, the number of first positioning holes is two, and the two first positioning holes are respectively disposed on opposite sides of the second telescoping tube.

9. The telescoping assembly of claim 8, wherein the first telescoping tube is a tension body, the second telescoping tube is a tension body, the first telescoping tube is coaxially sleeved with the second telescoping tube, the two first positioning holes are arranged in a central symmetry manner with respect to the axis of the telescoping assembly, and the two first protrusions are arranged in a central symmetry manner with respect to the axis of the telescoping assembly.

10. The telescoping assembly of claim 4, wherein the first friction member has a first stop projection that engages an end wall of the second telescoping tube.

11. The telescoping assembly of claim 1, wherein the first telescoping tube is coaxially clearance fit with the second telescoping tube, and the first projection has a thickness less than a clearance between the first telescoping tube and the second telescoping tube.

12. The telescoping assembly of any of claims 1-11, further comprising a second friction member disposed on the second telescoping tube, the second friction member being compressed between the first telescoping tube and the second telescoping tube, the first friction member sliding to a first position in the second region when the telescoping assembly is at its maximum length, the first friction member and the second friction member blocking each other.

13. The telescopic assembly of claim 1, wherein the first protrusion is a bar shape, the first protrusion extends along a circumferential direction of the first telescopic tube, and the first protrusion and the first base surface gradually transition along a sliding direction of the first friction member.

14. A telescopic rod, comprising at least one telescopic assembly according to any one of claims 1 to 13, wherein the telescopic rod is provided with at least two telescopic pipes which are sequentially sleeved, and any two adjacent telescopic pipes are a first telescopic pipe and a second telescopic pipe of the telescopic assembly respectively.