CN106760924A - A telescopic column and a tent with the telescopic column - Google Patents

Abstract

The invention discloses a telescopic upright post which comprises an inner tube, an outer tube and a locking mechanism, wherein the inner tube and the outer tube are sleeved with each other, the locking mechanism is used for fixing the inner tube and the outer tube together, the inner tube is provided with an opening end part inserted into the outer tube, and the side wall of the inner tube is provided with a strip-shaped opening; the locking mechanism comprises a tensioning part and a matching assembly, wherein the tensioning part provides a tensioning force for expanding the opening end part outwards along the direction vertical to the length direction of the inner pipe, the matching assembly is fixed on the opening end part and matched with the tensioning part, and operation holes corresponding to the tensioning part are formed in the side walls of the inner pipe and the outer pipe. Compared with the prior art, the telescopic upright post disclosed by the invention has the advantages that the inner pipe is tensioned through the tensioning part and the matching assembly, the inner pipe and the outer pipe can be firmly locked together, the operation is convenient, and the bearing capacity is larger. The invention also discloses a tent adopting the telescopic upright post, which has the advantages of convenient assembly and small packaging volume.

Description

A telescopic column and a tent with the telescopic column

technical field

The invention relates to a tent, in particular to a telescopic upright for a tent and a tent with the telescopic upright.

Background technique

Tents are mainly temporarily built outdoors for shelter from wind and rain, sun protection or temporary residence. The structure of the tent generally includes a tarpaulin, a top bracket and a column. In order to facilitate transportation and assembly, most of the top brackets in existing tents adopt a foldable structure. However, due to the need to bear a large weight, the columns are generally of fixed length, and take up a lot of space during transportation. Only for those lightweight tent structures, the columns are designed to be telescopic.

In the prior art, the column of the telescopic structure mainly fixes the length of the column by clips, for example, a telescopic frame for a tent disclosed in Chinese invention patent CN104196319A. However, during the use of the clamping parts, due to the large local force, it is very easy to break, causing the danger of the tent to collapse from time to time.

Contents of the invention

In view of this, in order to overcome the defects of the prior art, the first object of the present invention is to provide a telescopic column with a more stable structure and a greater bearing capacity.

In order to achieve the above object, firstly, the present invention provides an inner tube and an outer tube which are nested with each other, and a locking mechanism for fixing the inner tube and the outer tube together. The opening end in the outer tube, the side wall of the opening end is provided with a bar-shaped opening; a tension member for tensioning force inflated, a mating assembly disposed in the inner tube and cooperating with the tension member to tension the open end, the side walls of the inner tube and the outer tube Operation holes corresponding to the tensioning parts are opened on the top.

In a specific aspect, the tension member is a screw, and the matching assembly includes a first elastic tension member and a second elastic tension member respectively fixed on both sides of the side wall of the opening end, and the screw rod is It is axially and movably connected between the first elastic tension member and the second elastic tension member, at least one of the first elastic tension member and the second elastic tension member is threadedly connected with the screw .

A strip-shaped opening is set on the side wall of the opening end, so that the side wall has a certain range of motion in the radial direction. The ground is expanded outward or contracted inward to achieve the purpose of being pressed and fixed with the outer tube or loosened. Since the inner tube and the outer tube are in face-to-face contact after being tensioned, the friction force is relatively large, so it is also more stable and has a greater bearing capacity.

In some specific embodiments, both the inner tube and the outer tube are square tubes, and at least one strip-shaped opening is respectively opened on at least two surfaces of the side wall of the inner tube, and at least two The strip-shaped opening divides the side wall of the opening end of the inner tube into at least two side wall deformation parts, and the two sides of each side wall deformation part respectively include side edges divided by the strip-shaped opening , the two ends of the first elastic tension member are respectively connected between the two sides on the first side wall deformation portion, and the two ends of the second elastic tension member are respectively connected to the second between the two sides on the side wall deformation. In order to increase the frictional force between the inner tube and the outer tube, wear-resistant parts or wear-resistant layers, such as rubber blocks, rubber sleeves or rubber coatings, are respectively provided on the deformed parts of the side walls for frictional contact with the inner wall of the outer tube.

In some embodiments, at least two strip-shaped openings divide the side wall of the opening end of the inner tube into two U-shaped side wall deformations, and the two sides of each side wall deformation are respectively includes a corner, each of which includes at least one side, and the two ends of the first elastic tension member are respectively connected between the two corners of the first side wall deformation portion, Both ends of the second elastic tension member are respectively connected between the two corners of the second side wall deformation portion.

Preferably, the first elastic tension member includes first connecting sections located on both sides and correspondingly connected to the two sides of the first side wall deformation portion, and the first connecting sections connected on both sides The first elastic deformation section between the sections; the second elastic tension member includes a second connecting section located on both sides and correspondingly connected to the two sides of the second side wall deformation part, and connected to the two sides The second elastically deformable section between the second connecting sections on the side.

In some specific embodiments, the first elastic deformation section and the second elastic deformation section are oppositely arranged and arched inward respectively.

In some embodiments, the first end of the screw is threaded and passes through one of the first elastic tension member and the second elastic tension member, and the second end of the screw abuts against On the other of said first elastic tension member and said second elastic tension member.

In some other embodiments, the two ends of the screw are respectively threaded with the first elastic tension member and the second elastic tension member, and the screw threads on the two ends of the screw The direction of the spiral is opposite.

Preferably, an elastic positioning member is also provided in the inner tube, and a through hole is opened on the side wall of the inner tube, and the elastic positioning member has a positioning protrusion that is movably arranged in the through hole and protrudes outward. The side wall of the outer tube is provided with a positioning hole matched with the positioning protrusion.

In a specific embodiment, the elastic positioning member includes a positioning pin and a spring disposed in the inner tube, and the positioning protrusion is disposed at one end of the positioning pin. The elastic force of the spring makes the positioning protrusion on one end of the positioning pin push out the through hole on the side wall of the inner tube, when the positioning hole on the side wall of the outer tube and the positioning protrusion on the positioning pin The inner and outer tubes can be positioned when they are fully fitted.

Compared with the prior art, after the telescopic column of the present invention is extended to a certain length, after the tensioning part is operated by a tool, the tensioning part cooperates with the matching component, so that the opening end of the inner tube is along the direction perpendicular to the length direction Expand outward, and the opening end of the inner tube is expanded and pressed against the outer tube, so that the inner tube and the outer tube are tightly fitted and fixed together, and there is a large friction between the two tight surfaces. The structure of the telescopic column is made more stable, the bearing capacity is greater, and the telescopic column can be guaranteed to have a more stable supporting effect.

The second object of the present invention is to provide a tent, which includes a beam and a roof frame, and also includes telescopic uprights according to any of the above-mentioned technical solutions.

Wherein, the crossbeam can be formed by successively connecting multi-section connecting rods.

The roof frame can also include a top connector and a plurality of push rods connected to the top connector, the upper ends of each of the push rods are respectively connected to the top connector, each of the push rods All extend downwards obliquely; the lower parts of some of the plurality of ejector rods are connected to the upper end of the telescopic column, and the lower parts of other ejector rods are connected to the cross beam.

The top connecting piece has a plurality of connection interfaces evenly spaced along the same circumference, and the upper end of each push rod is connected to a corresponding connection interface.

In a specific embodiment, there are four telescopic uprights, and two telescopic uprights are connected by a beam to form a cubic frame. The canopy frame is fixed to a cubic framework of telescoping uprights and beams.

Compared with the prior art, the tent provided by the present invention has a more stable structure, more convenient installation and smaller packaging volume after adopting the telescopic uprights.

Description of drawings

Fig. 1 is a front view of the telescopic column of the first embodiment.

Fig. 2 is a K-K sectional view in Fig. 1 .

Fig. 3 is a G-G sectional view in Fig. 1 .

Fig. 4 is a sectional view taken along line H-H in Fig. 1 .

Fig. 5 is a schematic cross-sectional view of the telescopic column of the second embodiment.

Fig. 6 is a perspective view of the tent (with the tarpaulin removed) of the third embodiment.

Fig. 7 is an enlarged view of part III in Fig. 6 .

In the attached picture:

10-inner tube, 100-telescopic column, 110-opening end, 101-operating hole, 120-strip opening, 130-screw, 140-first elastic tensioning member, 150-second elastic tensioning member, 20 -outer tube, 210-housing; 160-internal screw, 170-angle, 190-pin, 191-positioning protrusion, 200-spring, 211-positioning auxiliary hole, 213-button, 214-end cover, 30 -beam, 40-canopy frame, 410-top connector, 411-connection interface, 50-ejector rod, 60-diagonal brace.

detailed description

Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

Embodiment one

Referring to FIGS. 1 to 4 , the telescopic column 100 of this embodiment includes an inner tube 10 and an outer tube 20 that are nested in each other, and a locking mechanism that fixes the inner tube 10 and the outer tube 20 together. The inner tube 10 has an open end 110 inserted into the outer tube 20 , and a strip-shaped opening 120 is defined on the side wall of the inner tube 10 , and the strip-shaped opening 120 extends longitudinally to the edge of the opening. The locking mechanism includes a tension member that provides tension to expand the opening end 110 outward in a direction perpendicular to the length direction of the inner tube 10, and is arranged on the inner tube 10 to cooperate with the tension member. As for the matching component of the tensioning opening end 110 , the side walls of the inner tube 10 and the outer tube 20 are provided with operation holes corresponding to the tensioning components. Specifically, an operation hole 101 is opened on the inner tube, and an operation hole 201 is opened on the outer tube 20 .

Both the inner tube 10 and the outer tube 20 are square tubes, and both the inner tube 10 and the outer tube 20 are square tubes. In some embodiments, at least one strip-shaped opening is respectively opened on at least two surfaces of the side wall of the inner tube 10 120 , at least two strip-shaped openings 120 divide the side wall of the opening end of the inner tube 10 into at least two side wall deformations. For example, at least one strip-shaped opening 120 is provided on two opposite surfaces of the side wall of the inner tube 10, and at least two strip-shaped openings 120 divide the side wall of the opening end of the inner tube 10 into two side wall deformed parts. , the two sides of each side wall deformation part respectively include the side edges divided by the strip-shaped opening 120 . At least two strip-shaped openings 120 on two opposite surfaces divide the side wall of the opening end of the inner tube 10 into two U-shaped side wall deformations, each side wall deformation includes a corners 170, each corner 170 including at least one of said sides.

In this embodiment, the four sides of the side wall of the inner tube 10 are respectively provided with one strip-shaped opening 120, and the four strip-shaped openings 120 divide the side wall of the open end of the inner tube 10 into two U-shaped sides. In the wall deformation portion, two sides of each side wall deformation portion respectively include a corner 170, and each corner 170 includes a side edge, as shown in FIG. 4 . Of course, more than one strip-shaped opening 120 can be provided on any of the four surfaces of the inner tube 10 , and the side wall of the opening end of the inner tube 10 can also be divided into four corners 170 .

Wherein, the tension member is a screw rod 130, and the matching assembly includes a first elastic tension member 140 and a second elastic tension member 150 respectively fixed on both sides of the side wall of the opening end 11, and the screw rod 13 is arranged along its own axis. It is movably connected between the first elastic tensioning member 140 and the second elastic tensioning member 150 , at least one of the first elastic tensioning member 140 and the second elastic tensioning member 150 is screwed to the screw rod 130 . For example, the first elastic tension member 140 and the screw rod 130 are opposed or fixed together, and the second elastic tension member 150 is screwed to the screw rod 130 . Alternatively, the second elastic tension member 150 and the screw rod 130 are opposed or fixed together, and the first elastic tension member 140 is screwed to the screw rod 130 . When the screw 130 is rotated, the parts of the first elastic tension member 140 and the second elastic tension member 150 that are in contact with the screw 130 are separated from each other or approached to each other.

Both ends of the first elastic tension member 140 are respectively connected between the two corners 170 of the first side wall deformation portion, and both ends of the second elastic tension member 150 are respectively connected to two corners of the second side wall deformation portion. between 170 and 170 angles. In this embodiment, as shown in FIGS. 3 and 4 , the two ends of the first elastic tension member 140 are respectively connected to two adjacent corners 170 of the four corners 170 , and the second elastic tension member 150 Two ends of each of the four corners 170 are respectively connected to the other two adjacent corners 170 . In order to increase the frictional force between the inner tube 10 and the outer tube 20 , the four corners 170 are respectively provided with wear parts 171 for frictional contact with the inner wall of the outer tube 20 . The wear parts 171 can be rubber blocks or rubber sleeves.

The first elastic tension member 140 includes a first connecting section 141 located on both sides and correspondingly connected to two adjacent corners 170 , and a first elastic deformation section 142 connected between the first connecting sections 141 on both sides. The second elastic tension member 150 includes a second connecting segment 151 located on both sides and correspondingly connected to the other two adjacent corners 170, and a second elastic deformation connected between the second connecting segment 151 on both sides Paragraph 152. In this embodiment, the first elastic deformation section 142 and the second elastic deformation section 152 are oppositely arranged and arched inward respectively. Therefore, the first elastic tension member 140 and the second elastic tension member 150 in this embodiment The shape is "M". Both the first elastic deformation section 142 and the second elastic deformation section 152 are arc-shaped.

In order to enhance the elastic force and service life of the first elastic tension member 140 and the second elastic tension member 150 , the first elastic tension member 140 and the second elastic tension member 150 can be integrally bent by metal elastic pieces. The connection between the first connecting section 141 and the second connecting section 151 and the inner wall of the inner tube 10 may be welded, clamped or bolted.

In this embodiment, the first end of the screw 130 is threaded and passed through the arched top of the first elastic deformation section 142 of the first elastic tension member 140, and the second end of the screw 130 abuts against the second The arched top of the second elastically deformable section 152 of the elastic tension member 150 . An internal threaded member 160 is fixed on the first elastic deformation section 142 , and the first end of the screw rod 130 is threaded and passed through the internal threaded member 160 . An operating part is provided on the first end of the screw rod 130 , and the operating part is specifically an inner hexagonal hole 131 . When the first end of the screw 130 is aligned with the operation hole 201 of the outer tube 20 , the screw 130 can be rotated by inserting the hex wrench into the operation hole 201 of the outer tube 20 corresponding to the screw 130 .

When the screw 130 rotates in the forward direction, the force of its second end against the second elastic tension member 150 increases continuously, and the first elastic deformation section 142 and the second elastic deformation section 152 are relatively pressed against each other. At this time, the first elastic deformation section 152 The arc of an elastic deformation section 142 becomes smaller and tends to straighten, so that the first connecting sections 141 on both sides are separated from each other and spread apart, driving the two corners 170 of the corresponding U-shaped first side wall deformation part to expand relative to each other. At the same time, the arc of the second elastic deformation section 152 becomes smaller and tends to become straight, so that the second connecting sections 151 on both sides are separated from each other and open, driving the corresponding U-shaped The two corners 170 of the second side wall deformed portion of the second side wall are relatively opened to be close to the inner wall of the outer tube 20, so that the four corners 170 are spread outward along the axial direction perpendicular to the screw rod 130 and are close to the outer tube 20. Therefore, the opening end 110 of the inner tube 10 expands and the outer tube 20 is tightly fixed together.

When the screw 130 reversely rotates, the force of its second end against the second elastic tension member 150 decreases continuously until it is separated from the second elastic tension member 150, so that the first elastic deformation section 142 and the second elastic The mutual pressing force between the deformation sections 152 becomes smaller until the pressing force disappears. At this time, the first elastic deformation section 142 tends to bend and return to a natural bending state under its own elastic force, thereby The first connecting sections 141 on both sides are moved closer to each other and reset, and the two corners 170 of the corresponding U-shaped first side wall deformation part are relatively close together and separated from the inner wall of the outer tube 20; meanwhile, the second elastic deformation section 152 is in its own Under the elastic force, it tends to bend back to the natural bending state, so that the second connecting sections 151 on both sides are moved closer to each other and reset, and the other two corners 170 of the corresponding U-shaped second side wall deformation part are relatively moved closer to each other. Breaking away from the inner wall of the outer tube 20 achieves the effect of making the four corners 170 shrink inwardly along the axial direction perpendicular to the screw 130 and separate from the inner wall of the outer tube 20, so that the inner tube 10 and the outer tube 20 can be separated along the length direction. Relatively slide to adjust the telescopic length of the two.

In this embodiment, in order to facilitate positioning when adjusting the telescopic position of the inner tube, an elastic positioning member is also provided in the inner tube 10. The elastic positioning member includes a pin shaft 190 and a spring 200, and the spring 200 and the pin shaft 190 are fixed in the On the guide seat in the tube 10, a through hole is opened on the side wall of the inner tube 10, and one end of the pin shaft 19 has a positioning protrusion 191 which is movably arranged in the through hole of the inner tube 1 and protrudes outward. A positioning hole for matching with the positioning convex part 191 is opened on the side wall.

The locking mechanism further includes a casing 210 sheathed on the opening of the outer tube 20 , and corresponding to the positioning hole, the casing 210 is provided with a positioning auxiliary hole 211 for accommodating the positioning protrusion 191 . An operation auxiliary hole is opened on the casing 210 corresponding to the operation hole 201 on the outer tube 20 . The housing 210 is also provided with a button 213 for pressing and driving the positioning protrusion 191 to retract inwardly.

When operating to lock the inner tube 10 and the outer tube 20 , first adjust the inner tube 10 and the outer tube 20 to a suitable length, and make the positioning protrusion 191 of the pin shaft 190 eject from the inner tube 10 and snap into the positioning auxiliary hole 211 . Then use an Allen wrench to penetrate the auxiliary operation hole on the housing 210, the operation hole 201 on the outer tube 20, and the operation hole 101 on the inner tube 10 in sequence, and when the screw rod 130 is tightened, the screw rod 130 will abut against the second elastic tensioning member 150 becomes larger, the first elastic tension member 140 and the second elastic tension member 150 tend to straighten, so that the four corners 170 of the opening end of the inner tube 1 expand outward, so that the inner tube 10 and the outer tube 20 are compressed and fixed together.

When the operation unlocks the inner tube 10 and the outer tube 20, when the screw 130 is loosened, the force of the screw 130 against the second elastic tension member 150 becomes smaller, and both the first elastic tension member 140 and the second elastic tension member 150 The pressing force between them decreases, and they all tend to return to the natural bending state. The opening end of the inner tube 10 is actively retracted from the expansion, and the pressing force between the inner tube 10 and the outer tube 20 becomes very small. At this time, the button 213 is pressed, and the positioning protrusion 191 of the pin shaft 190 is retracted from the positioning auxiliary hole 211 into the inner tube 10, so that the inner tube 10 and the outer tube 20 can be telescopically adjusted.

A plurality of positioning holes and a plurality of operation holes 201 can also be provided in the length direction of the outer tube 20 itself, for adapting the positioning of the inner tube 10 and the outer tube 20 in various telescopic lengths. During transportation, the inner tube 10 and the outer tube 20 can be shrunk to the shortest, or the two can be disassembled to reduce the package length.

The diameter of the screw 13 should be larger than the diameter of the operation hole 101 on the inner tube 10, so as to prevent the screw 130 from coming out. At the same time, in order to avoid misoperation, the housing 210 is also provided with an end cap 214 for blocking the operation hole 201 .

After the telescopic column 100 of this embodiment is stretched to the longest length, the inner tube 10 and the outer tube 20 are positioned using elastic positioning members (pin shaft 190 and spring 200 ), and then the screw rod 130 is screwed through the locking mechanism through a tool. The opening end 110 of the inner tube 10 is expanded outwards, and the opening end 110 of the inner tube 10 is expanded and pressed against the outer tube 20, so that the inner tube 10 and the outer tube 20 are tightly fitted and fixed together, so that The telescopic column 100 has a more stable structure and a greater bearing capacity, which can ensure a more stable supporting effect of the telescopic column. When the telescopic column 100 is in use, the outer tube 20 may be supported on the ground, and the inner tube 10 may be located above; or the inner tube 10 may be supported on the ground, and the outer tube 20 may be located above.

Embodiment two

The structure of the telescopic column of this embodiment is basically the same as that of Embodiment 1, the difference is that the two ends of the screw rod 130 are respectively threaded with the first elastic tensioning member 140 and the second elastic tensioning member 150, and the first elastic tensioning The member 140 and the second elastic tension member 150 are respectively provided with an internal thread member 160 , and the helical directions of the threads on both ends of the screw rod 130 are opposite, as shown in FIG. 5 . When the screw 130 rotates in the forward direction, the first elastic deformation section 142 and the second elastic deformation section 152 are pressed against each other, so that the four corners 170 are spread outward along the axial direction perpendicular to the screw 130 and tightly attached to the outer tube 20 Therefore, the opening end 110 of the inner tube 10 expands and the outer tube 20 is tightly fixed together. When the screw rod 130 reversely rotates, the mutual abutting force between the first elastic deformation section 142 and the second elastic deformation section 152 becomes smaller, so that the four corners 170 are aligned along the axial direction perpendicular to the screw rod 130. The inner contraction breaks away from the effect of the inner wall of the outer tube 20, so the inner tube 10 and the outer tube 20 are separated and can be slid relative to each other along the length direction to adjust the stretching length of the two.

Embodiment Three

As shown in Figures 6 and 7, the present embodiment provides a tent, including a beam 30, a roof frame 40 and a tarpaulin, and also includes telescopic columns 100 in Embodiment 1 or Embodiment 2, wherein the number of telescopic columns 100 is Four, the beam 30 is connected between the two telescopic uprights 100 . Two telescopic uprights 100 are connected by a crossbeam 30, and four telescopic uprights 100 are sequentially connected by four crossbeams 30 to form a cube frame. The roof frame 40 is fixed on the cubic frame formed by the telescopic uprights 100 and the beams 30 , and the roof frame 40 includes a top connecting piece 410 and a plurality of push rods 50 connected to the top connecting piece 410 . Specifically, in this embodiment, the top connector 410 is provided with a plurality of connection interfaces 411, and the upper end of each ejector rod 50 is connected to a corresponding connection interface 411, and each ejector rod 50 extends obliquely downward; The bottoms of a part of the push rods 50 in the three push rods 50 are connected to the upper end of the telescopic column 100 , and the bottoms of the other push rods 50 are connected to the cross beam 30 . In this embodiment, the number of push rods 50 is 8, of which 4 push rods 50 are respectively connected to the top connector 410 and the upper end of a corresponding telescopic column 100, and the other 4 push rods 50 are respectively connected to the top connector 410 and the upper end of a corresponding telescopic column 100. corresponding to the middle of a beam 30 .

Wherein, the beams 30 are composed of multiple connecting rods connected in sequence. A diagonal brace 60 is also provided between each beam 30 and the telescopic upright 100 . The two beams 30 connected to the same telescopic column 100 are perpendicular to each other, and a diagonal brace 60 is also connected between the two beams 30 . The two diagonal braces 60 on the same telescopic column 100 and the diagonal braces 60 between the two beams 30 on the telescopic column 100 form a triangle. After the diagonal braces 60 are connected, the strength of the cube frame can be strengthened, making the whole structure more stable. In order to facilitate packaging and transportation, the ejector rod 60 is also formed by successively connecting multiple connecting rods.

When the tent of this embodiment is assembled, it can be installed by only two people. First, the telescopic uprights 100 are assembled, and the telescopic uprights 100 are shrunk to the shortest length, and then the crossbeams 30 are connected between the telescopic uprights 100 to form a cubic frame. , then install the assembled canopy frame 40 on the cube frame, and cover it with a tarpaulin, then extend the length of the telescopic column 100, and then lock the telescopic column 100 through the locking mechanism, the tent can be assembled, the assembly process Very convenient. Since each telescopic column 100 is telescopic, the beam 30 and the ejector rod 50 can also be disassembled into shorter parts, which greatly reduces the packaging volume and facilitates transportation and storage.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention. Equivalent changes or modifications made in the spirit shall fall within the protection scope of the present invention.

Claims (10)

1. A telescopic column, comprising an inner tube and an outer tube that are nested in each other, and a locking mechanism that fixes the inner tube and the outer tube together, it is characterized in that: the inner tube has a The opening end in the outer tube, the side wall of the opening end is provided with a bar-shaped opening; The tension part of the open tension force is arranged in the inner tube and cooperates with the tension part to tension the opening end, and the inner tube and the side wall of the outer tube All are provided with operation holes corresponding to the tensioning parts. 2. The telescopic column according to claim 1, characterized in that: the tension member is a screw rod, and the matching assembly includes a first elastic tension member and a first elastic tension member respectively fixed on both sides of the side wall of the opening end The second elastic tension member, the screw rod is movably connected between the first elastic tension member and the second elastic tension member along its axial direction, the first elastic tension and the second elastic tension At least one of the fasteners is threadedly connected to the screw. 3. The telescopic column according to claim 2, characterized in that: the inner tube and the outer tube are both square tubes, and at least one of the strip-shaped openings, at least two strip-shaped openings divide the side wall of the opening end of the inner tube into at least two side wall deformation parts, and the two sides of each side wall deformation part respectively include the The side edges obtained by dividing the strip-shaped opening, the two ends of the first elastic tension member are respectively connected between the two sides on the first side wall deformation portion, and the two ends of the second elastic tension member The two ends are respectively connected between the two sides on the second side wall deformation part. 4. The telescopic column according to claim 3, characterized in that: at least two strip-shaped openings divide the side wall of the opening end of the inner tube into two U-shaped side wall deformations, each of which Both sides of the deformed part of the side wall respectively include a corner, and each of the corners includes at least one side edge, and the two ends of the first elastic tension member are respectively connected to the deformed part of the first side wall. Between the two corners, both ends of the second elastic tension member are respectively connected between the two corners of the second side wall deformation portion. 5. The telescopic column according to claim 3, wherein the first elastic tension member includes first connections located on both sides and correspondingly connected to the two sides of the first side wall deformation portion section, and a first elastic deformation section connected between the first connecting section on both sides; The sides are correspondingly connected to the second connection section and the second elastic deformation section connected between the second connection sections on both sides. 6. The telescopic column according to claim 3, characterized in that: the first end of the screw is threaded and passes through one of the first elastic tension member and the second elastic tension member, The second end of the screw abuts against the other one of the first elastic tension member and the second elastic tension member. 7. The telescopic column according to claim 3, characterized in that: the two ends of the screw are respectively threaded with the first elastic tension member and the second elastic tension member, and the screw rod The helical directions of the threaded wires on the two ends of the head are opposite. 8. A telescopic column according to claim 2, characterized in that: the inner tube is also provided with an elastic locator, a through hole is opened on the side wall of the inner tube, and the elastic locator has a movable A positioning protrusion is provided in the through hole and protrudes outward, and a positioning hole matching the positioning protrusion is opened on the side wall of the outer tube. 9 . The telescopic column according to claim 8 , wherein the elastic positioning member includes a positioning pin and a spring disposed in the inner tube, and one end of the positioning pin has the positioning protrusion. 10 . 10. A tent, comprising a beam and a roof frame, characterized in that it further comprises the telescopic column according to any one of claims 1-9.