CN218760772U - Telescopic tube - Google Patents

Abstract

The utility model discloses a flexible pipe, include: the outer pipe is provided with a mounting groove extending along the length direction and an anti-falling groove communicated with the side part of the mounting groove and extending around the circumference of the outer pipe; the outer wall of the inner pipe is convexly provided with a first bulge and a second bulge, the first bulge and the second bulge can both reciprocate along the length direction of the mounting groove, and the first bulge can rotate around the axis of the outer pipe so as to be fixed in the mounting groove; when the flexible pipe needs to be elongated, the relative outer tube of inner tube stretches out the removal, when the second arch removed to one side of anticreep groove, first arch rotated around the axis of outer tube, the second arch can be followed the mounting groove and got into in the anticreep groove with the relative flexible removal of restriction inner tube and outer tube to limit inner tube and outer tube relative motion on axial and circumference, improve the support stability of flexible pipe, ensure photographic equipment's security, and this flexible pipe simple structure, ingenious, flexible regulation operation is convenient moreover.

Description

Telescopic tube

Technical Field

The utility model relates to a photography equipment technical field, in particular to flexible pipe.

Background

Photographic equipment such as from rapping bar, tripod can often install on flexible pipe. In the related art, the telescopic tube generally includes an inner tube 10 and an outer tube 20 sleeved outside the inner tube 10, and referring to fig. 5 and 6, an outer wall of the inner tube 10 is provided with a protrusion 11, and an inner wall of the outer tube 20 is provided with a bent portion 21 engaged with the protrusion 11. When the inner tube 10 rotates relative to the outer tube 20 until the protrusion 11 is dislocated from the inflection point 21, the outer wall of the inner tube 10 is tightly fitted with the inner wall of the outer tube 20, so that the inner tube 10 and the outer tube 20 are relatively stable.

Although the outer wall of the inner tube 10 and the inner wall of the outer tube 20 are tightly fitted to limit the relative rotation between the inner tube 10 and the outer tube 20, when the inner tube 10 or the outer tube 20 is subjected to an axial force, the inner tube 10 and the outer tube 20 are likely to move in a relative telescopic manner, which results in unstable support of the camera and even fall of the camera.

In addition, the distance from the center line of the outer tube 20 to the inner wall gradually decreases from the turning position 21 in the clockwise direction, and the inner tube 10 rotates relative to the outer tube 20, so that the protrusion 11 is tightly matched with the inner wall of the outer tube 20, and the inner tube 10 or the outer tube 20 is loosened when being subjected to a small torsion, thereby affecting the safety of the photographic equipment.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least, for this reason, the utility model provides a restriction inner tube and the relative flexible pipe that removes of outer tube when can prevent inner tube and outer tube relative pivoted.

According to the utility model discloses flexible pipe, include: the inner wall of the outer pipe is provided with a mounting groove extending along the length direction of the outer pipe and an anti-falling groove communicated with the side part of the mounting groove and extending around the circumference of the outer pipe; the outer wall of the inner pipe is convexly provided with a first bulge and a second bulge, the first bulge and the second bulge can move in a reciprocating mode along the length direction of the mounting groove, and the first bulge can rotate around the axis of the outer pipe to be fixed on the mounting groove; when the first bulge rotates around the axis of the outer pipe, the second bulge can enter the anti-falling groove along the installation groove to limit the relative telescopic movement of the inner pipe and the outer pipe.

According to the utility model discloses flexible pipe has following beneficial effect at least:

when the above telescopic pipe needs to be extended, the inner pipe stretches out and moves relative to the outer pipe, the mounting groove is moved along with the second protrusion, when the second protrusion moves to one side of the anti-drop groove, the inner pipe and the outer pipe rotate relatively, the first protrusion is fixed in the mounting groove to prevent the inner pipe and the outer pipe from rotating relatively, meanwhile, the second protrusion enters the anti-drop groove along the mounting groove to limit the relative telescopic movement of the inner pipe and the outer pipe, thereby limiting the relative movement of the inner pipe and the outer pipe in the axial direction and the circumferential direction, the support stability of the telescopic pipe is improved, the safety of photographic equipment is guaranteed, the telescopic pipe is simple in structure, and is ingenious, the telescopic adjusting operation is convenient.

In some embodiments of the utility model, the mounting groove includes along the length direction of outer tube extend the guide way that sets up and with the constant head tank that the lateral part of guide way is linked together, anticreep groove with the guide way communicates, first arch the second is protruding all to be followed the guide way reciprocating sliding, first arch can be followed the guide way gets into the constant head tank is in order to prevent the inner tube is relative the outer tube rotates, simultaneously, the second arch can be followed the guide way gets into anticreep groove is in order to restrict the inner tube is relative the outer tube concertina movement.

In some embodiments of the present invention, the groove depth of the positioning groove is smaller than the groove depth of the guiding groove, and the first protrusion can be tightly fitted with the groove bottom of the positioning groove.

In some embodiments of the present invention, the positioning groove is connected to the guide groove through a convex arc surface.

In some embodiments of the present invention, the inner tube is provided with an arc plate located on the outer surface of the inner tube, and the first protrusion and the second protrusion are both disposed on the arc plate.

The utility model discloses an in some embodiments, the pipe wall circumference of inner tube is provided with a plurality of first draw-in grooves, the circular arc board the mounting groove with the quantity of first draw-in groove is unanimous, be equipped with on the circular arc board inlay the dress in the first joint portion of first draw-in groove.

In some embodiments of the present invention, the first protrusion and the second protrusion are disposed side by side, and the second protrusion is closer to the anti-drop groove than the first protrusion, and the width of the whole formed by the first protrusion and the second protrusion is consistent with the width of the guide groove.

In some embodiments of the present invention, a dimension of the second protrusion extending along the length direction of the outer tube is consistent with a dimension of the separation preventing groove extending along the length direction of the outer tube, so as to prevent the inner tube and the outer tube from relatively moving in a telescopic manner.

In some embodiments of the present invention, the end of the outer tube is provided with a slip stopper capable of abutting against the first protrusion or the second protrusion.

The utility model discloses an in some embodiments, the internal perisporium of the tip of outer tube is equipped with round second draw-in groove, the only piece that takes off be the joint in split ring in the second draw-in groove, the split ring is followed the radial protrusion of outer tube, the split ring be equipped with mounting groove assorted second joint portion.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view of an embodiment of a telescopic tube according to the present invention;

FIG. 2 is an exploded view of the embodiment of FIG. 1;

FIG. 3 is a schematic cross-sectional view of the embodiment of FIG. 1 with the inner and outer tubes freely telescoping;

FIG. 4 is a schematic cross-sectional view of the inner and outer tubes of the embodiment of FIG. 1 in a relatively fixed position;

FIG. 5 is a schematic structural view of a conventional telescopic tube in which an inner tube and an outer tube are freely telescopic;

fig. 6 is a schematic view showing a structure in which an inner tube and an outer tube of a conventional telescopic tube are relatively fixed.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, if there are first and second descriptions for distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper and lower directions, is the orientation or positional relationship shown on the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly defined, the terms "set," "mounted," "connected," and the like are to be understood in a broad sense, and may be directly connected or indirectly connected through an intermediate medium, for example; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be a mechanical connection; either internal to the two elements or in an interactive relationship of the two elements. The technical skill in the art can reasonably determine the specific meaning of the above words in the present invention by combining the specific contents of the technical solution.

Referring to fig. 1 to 4, an embodiment of the present invention provides a telescopic tube, including: an outer tube 100, wherein the inner wall of the outer tube 100 is provided with a mounting groove 110 extending along the length direction of the outer tube 100 and a separation-preventing groove 120 communicated with the side part of the mounting groove 110 and extending around the circumference of the outer tube 100; the outer wall of the inner pipe 200 is convexly provided with a first protrusion 310 and a second protrusion 320, the first protrusion 310 and the second protrusion 320 can reciprocate along the length direction of the mounting groove 110, and the first protrusion 310 can rotate around the axis of the outer pipe 100 to be fixed on the mounting groove 110; when the first protrusion 310 rotates around the axis of the outer pipe 100, the second protrusion 320 can enter the anti-drop groove 120 along the installation groove 110 to limit the relative telescopic movement of the inner pipe 200 and the outer pipe 100.

When the telescopic tube needs to be extended, the inner tube 200 extends and moves relative to the outer tube 100, the first protrusion 310 and the second protrusion 320 both move along the installation groove 110, when the second protrusion 320 moves to one side of the anti-falling groove 120, the inner tube 200 and the outer tube 100 rotate relative to each other, the first protrusion 310 is fixed in the installation groove 110 to prevent the inner tube 200 and the outer tube 100 from rotating relative to each other, meanwhile, the second protrusion 320 enters the anti-falling groove 120 along the installation groove 110 to limit the relative telescopic movement of the inner tube 200 and the outer tube 100, so that the relative movement of the inner tube 200 and the outer tube 100 is limited in the axial direction and the circumferential direction, the support stability of the telescopic tube is improved, and the safety of photographic equipment is guaranteed; when the telescopic tube needs to be shortened, the inner tube 200 and the outer tube 100 are rotated, the first protrusion 310 rotates along the circumferential direction of the outer tube 100 and is not fixed to the installation groove 110, the second protrusion 320 enters the installation groove 110 along the anti-drop groove 120, and at this time, the first protrusion 310 and the second protrusion 320 can move together along the length direction of the installation groove 110 to enable the inner tube 200 to be partially contracted inside the outer tube 100; the telescopic pipe has simple and ingenious structure and convenient telescopic adjustment operation.

Referring to fig. 2, 3 and 4, in some embodiments of the present invention, the mounting groove 110 includes a guide groove 111 extending along the length direction of the outer tube 100 and a positioning groove 112 communicating with the side portion of the guide groove 111, the anti-drop groove 120 communicates with the guide groove 111, both the first protrusion 310 and the second protrusion 320 can slide along the guide groove 111 in a reciprocating manner, the first protrusion 310 can enter the positioning groove 112 from the guide groove 111 to prevent the inner tube 200 from rotating relative to the outer tube 100, and meanwhile, the second protrusion 320 can enter the anti-drop groove 120 from the guide groove 111 to limit the inner tube 200 from moving telescopically relative to the outer tube 100. It should be noted that, when the first projection 310 and the second projection 320 are located in the guide groove 111, both the first projection 310 and the second projection 320 can slide freely along the guide groove 111, so that the inner tube 200 can move telescopically relative to the outer tube 100. When the first protrusion 310 enters the positioning groove 112 to limit the inner tube 200 from rotating relative to the outer tube 100, the second protrusion 320 is located in the anti-slip groove 120, so as to limit the inner tube 200 from moving telescopically relative to the outer tube 100, and only when the first protrusion 310 returns to the guide groove 111 again, the second protrusion 320 can leave the anti-slip groove 120 and return to the guide groove 111, so as to achieve telescopic adjustment between the inner tube 200 and the outer tube 100.

In addition, it should be noted that, in some other embodiments, on the basis of the second protrusion 220 and the anti-slip groove 120, the inner pipe 200 and the outer pipe 100 may be defined in the circumferential direction in the conventional structure form as shown in fig. 5 and 6.

Referring to fig. 2 and 3, in some embodiments of the present invention, in order to avoid the radial displacement between the inner tube 200 and the outer tube 100, the support stability of the telescopic tube when being extended is further improved, and the safety of the photographic equipment is ensured, the groove depth of the positioning groove 112 is smaller than that of the guiding groove 111, and the first protrusion 310 can be tightly fitted with the bottom of the positioning groove 112. When the first protrusion 310 and the second protrusion 320 are located in the guide groove 111, neither the first protrusion 310 nor the second protrusion 320 abuts against the bottom of the guide groove 111, so that both the first protrusion 310 and the second protrusion 320 can slide freely in the guide groove 111, and when the inner tube 200 and the outer tube 100 rotate relatively to make the first protrusion 310 enter the positioning groove 112, the first protrusion 310 is tightly fitted with the bottom of the positioning groove 112, thereby preventing the inner tube 200 and the outer tube 100 from loosening.

Referring to fig. 2, 3 and 4, in some embodiments of the present invention, in order to smoothly switch the position of the first protrusion 310 between the guide groove 111 and the positioning groove 112, the first protrusion 310 can be elastically clamped in the positioning groove 112, and the positioning groove 112 is connected to the guide groove 111 through the arc-shaped slope 113.

In some embodiments of the present invention, the inner tube 200 is installed with the arc plate 300 located on the outer surface of the inner tube 200, and the first protrusion 310 and the second protrusion 320 are both disposed on the arc plate 300. It can be understood that the arc plate 300 and the inner peripheral wall of the outer tube 100 are tightly attached to each other to play roles of rotary guiding and telescopic guiding, and the split arrangement of the arc plate 300 and the inner tube 200 is beneficial to the processing and forming of the first protrusion 310 and the second protrusion 320, so that the size precision of the first protrusion 310 and the second protrusion 320 can be conveniently controlled, and the difficulty in production and processing can be reduced.

Referring to fig. 2, in some embodiments of the present invention, the pipe wall circumference of the inner pipe 200 is provided with a plurality of first clamping grooves 210, the number of the arc plate 300, the mounting groove 110 and the first clamping grooves 210 is the same, and the arc plate 300 is provided with a first clamping portion 330 embedded in the first clamping grooves 210. First joint portion 330 combines together and realizes the convenient equipment between circular arc board 300 and the inner tube 200 with first draw-in groove 210, and the mode that sets up a plurality of circular arc boards 300 and mounting groove 110 is favorable to promoting the reliability of flexible regulation between inner tube 200 and the outer tube 100, improves the life of flexible pipe.

Referring to fig. 3, in some embodiments of the present invention, the first protrusion 310 and the second protrusion 320 are disposed side by side, and the second protrusion 320 is closer to the separation preventing groove 120 than the first protrusion 310, and the width dimension of the whole body formed by the first protrusion 310 and the second protrusion 320 is consistent with the width dimension of the guide groove 111. Since the second protrusion 320 is closer to the escape preventing groove 120 than the first protrusion 310, when the inner pipe 200 is rotated with respect to the outer pipe 100 to fix the angular position therebetween, the second protrusion 320 enters the escape preventing groove 120, and the first protrusion 310 is located outside the escape preventing groove 120. The width dimension of the whole body formed by the first protrusion 310 and the second protrusion 320 is consistent with the width dimension of the guide groove 111, so that the inner tube 200 does not move relatively when moving relative to the outer tube 100 in a telescopic manner, and the phenomenon of jamming is not easy to generate.

Referring to fig. 2, in some embodiments of the present invention, the second protrusion 320 has a size extending along the length direction of the outer tube 100 corresponding to a size of the separation preventing groove 120 extending along the length direction of the outer tube 100, so as to prevent the inner tube 200 and the outer tube 100 from relatively moving telescopically. The extension of the second protrusion 320 along the length direction of the outer tube 100 is consistent with the extension of the anti-slip groove 120 along the length direction of the outer tube 100, so that the extension tube has a fixed length in an extended state and can bear external forces of axial tension and axial compression. It should be noted that in some other embodiments, the extension dimension of the anti-slip groove 120 along the length direction of the outer tube 100 may be slightly larger than the extension dimension of the second protrusion 320 along the length direction of the outer tube 100, at this time, the inner tube 200 may be axially displaced with a smaller amplitude relative to the outer tube 100, and when the extension tube is subjected to an external axial force, the second protrusion 320 abuts against the end of the anti-slip groove 120 along the length direction of the outer tube 100.

Referring to fig. 1 and 2, in some embodiments of the present invention, in order to prevent the inner pipe 200 and the outer pipe 100 from being separated in the axial direction, the end of the outer pipe 100 is provided with a slip stopper 400 capable of abutting against the first protrusion 310 or the second protrusion 320.

Referring to fig. 2, in some embodiments of the present invention, the inner peripheral wall of the end portion of the outer tube 100 is provided with a circle of second engaging grooves 130, the anti-slip member 400 is a split ring engaged with the second engaging grooves 130, the split ring protrudes in the radial direction of the outer tube 100, and the split ring is provided with a second engaging portion 410 matched with the mounting groove 110. It should be noted that the split ring is made of plastic materials or metal materials, and has certain elasticity, and during assembly, the split ring is pinched to make the opening of the split ring converge inwards, and then the split ring is embedded into the outer tube 100 and then loosened, and the split ring recovers elastic deformation and is clamped in the second clamping groove 130, wherein the second clamping portion 410 is clamped at the end of the mounting groove 110 to realize the limiting of the split ring, and the opening is prevented from rotating around the second clamping groove 130. The above structure facilitates the installation of the drop stop member 400, simplifying the production process.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A telescopic tube, characterized in that it comprises:

the inner wall of the outer pipe (100) is provided with a mounting groove (110) extending along the length direction of the outer pipe (100) and a separation-preventing groove (120) communicated with the side part of the mounting groove (110) and extending around the circumference of the outer pipe (100);

the outer wall of the inner pipe (200) is convexly provided with a first protrusion (310) and a second protrusion (320), the first protrusion (310) and the second protrusion (320) can move in a reciprocating mode along the length direction of the installation groove (110), and the first protrusion (310) can rotate around the axis of the outer pipe (100) to be fixed on the installation groove (110);

when the first protrusion (310) rotates around the axis of the outer pipe (100), the second protrusion (320) can enter the anti-falling groove (120) along the installation groove (110) to limit the relative telescopic movement of the inner pipe (200) and the outer pipe (100).

2. A telescopic tube according to claim 1, characterized in that:

the mounting groove (110) comprises a guide groove (111) extending along the length direction of the outer pipe (100) and a positioning groove (112) communicated with the side portion of the guide groove (111), the anti-falling groove (120) is communicated with the guide groove (111), the first protrusion (310) and the second protrusion (320) can slide along the guide groove (111) in a reciprocating mode, the first protrusion (310) can enter the positioning groove (112) from the guide groove (111) to prevent the inner pipe (200) from rotating relative to the outer pipe (100), and meanwhile the second protrusion (320) can enter the anti-falling groove (120) from the guide groove (111) to limit the inner pipe (200) from moving telescopically relative to the outer pipe (100).

3. A telescopic tube according to claim 2, characterized in that:

the groove depth of the positioning groove (112) is smaller than that of the guide groove (111), and the first bulge (310) can be tightly matched with the groove bottom of the positioning groove (112).

4. A telescopic tube according to claim 2 or 3, characterized in that:

the positioning groove (112) is connected with the guide groove (111) through a raised arc-shaped slope surface (113).

5. A telescopic tube according to claim 2, characterized in that:

the inner tube (200) is installed and is located arc plate (300) of the surface of inner tube (200), first arch (310) with second arch (320) all set up in on arc plate (300).

6. A telescopic tube according to claim 5, characterised in that:

the pipe wall circumference of inner tube (200) is provided with a plurality of first draw-in grooves (210), circular arc board (300) mounting groove (110) with the quantity of first draw-in groove (210) is unanimous, be equipped with on circular arc board (300) inlay the dress in first joint portion (330) of first draw-in groove (210).

7. A telescopic tube according to claim 2, characterized in that:

the first protrusion (310) and the second protrusion (320) are arranged side by side, the second protrusion (320) is closer to the anti-falling groove (120) than the first protrusion (310), and the width of the whole body formed by the first protrusion (310) and the second protrusion (320) is consistent with that of the guide groove (111).

8. A telescopic tube according to claim 1, characterized in that:

the extension size of the second protrusion (320) along the length direction of the outer pipe (100) is consistent with the extension size of the anti-falling groove (120) along the length direction of the outer pipe (100) so as to prevent the inner pipe (200) and the outer pipe (100) from relative telescopic movement.

9. A telescopic tube according to claim 1, characterized in that:

the end of the outer tube (100) is provided with a slip-off preventing part (400) which can be abutted against the first protrusion (310) or the second protrusion (320).

10. A telescopic tube according to claim 9, characterized in that:

the inner peripheral wall of the end portion of the outer pipe (100) is provided with a circle of second clamping grooves (130), the anti-falling part (400) is a split ring clamped in the second clamping grooves (130), the split ring protrudes along the radial direction of the outer pipe (100), and the split ring is provided with a second clamping portion (410) matched with the mounting groove (110).

Images