CN217234024U

CN217234024U - Telescopic rod with locking structure

Info

Publication number: CN217234024U
Application number: CN202220681938.4U
Authority: CN
Inventors: 陆琦
Original assignee: Ningbo Weifeng Intelligent Technology Co ltd
Current assignee: Ningbo Weifeng Intelligent Technology Co ltd
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2022-08-19
Anticipated expiration: 2032-03-28

Abstract

A telescopic rod with a locking structure comprises a first rod and a second rod which are sleeved together, wherein one end of the second rod is provided with a locking assembly; the locking assembly comprises a central column, a movable eccentric sleeve is arranged on the outer side of the central column, the eccentric sleeve is driven to rotate on the central column through a limiting structure when the first rod rotates, and radial locking is achieved through extrusion between contact surfaces; the contact surface between the outer wall of the central column and the inner wall of the eccentric sleeve is an inclined surface in the axial direction, so that after radial locking, locking in the axial direction is realized through the inclined surface. The utility model provides a telescopic link with locking structure through the improvement to wherein locking structure, makes it have radial locking and axial locking function simultaneously, convenient operation, the stable function, and locking intensity is high.

Description

Telescopic rod with locking structure

Technical Field

The utility model belongs to telescopic link structure, concretely relates to telescopic link with locking structure.

Background

The bracing piece with flexible function is used extensively in daily life, work area, especially in the photographic auxiliary assembly field of making a video recording, need use the telescopic link, and this type of telescopic link generally is loop bar formula structure to be equipped with corresponding locking structure, consequently can adjust the length of telescopic link, and through locking structure locking, can adapt to different user demands.

In the prior art, the locking structure on some telescopic links is comparatively simple, generally is eccentric cover structure, can lock through rotating. Such as: in the chinese utility model patent of patent number 200820046312.6, a flexible pipe cam connection locking mechanism is disclosed, including the sleeve pipe that cup joints each other more than two sections together, hookup location department is equipped with the camshaft, and rotatory camshaft can make the diameter of cam overcoat enlarge, realizes being connected and fixed with the inseparable pressfitting of little sleeve pipe and big sleeve pipe, is applicable to the tripod of camera or camera.

The applicant finds that in the use process, in many existing telescopic rods, an eccentric locking structure can realize radial locking in the rotating process, the length of the telescopic rod can be conveniently adjusted, but axial locking needs other structures such as a positioning protrusion and a positioning hole, so that the practical operation process is still troublesome, and when the positioning protrusion fails, once the axial stress is large, the telescopic rod retracts when the locking fails, and the safety of the camera device used and assembled on the telescopic rod is affected.

Therefore, based on above current situation, this application has carried out further design and improvement to telescopic link locking structure.

SUMMERY OF THE UTILITY MODEL

Not enough to above prior art, the utility model provides a telescopic link with locking structure through the improvement to wherein locking structure, makes it have radial locking and axial locking function simultaneously, convenient operation, and the function is stable, and locking intensity is high.

In order to solve the above technical problem, the present invention solves the above technical problems.

A telescopic rod with a locking structure comprises a first rod and a second rod which are sleeved together, wherein one end of the second rod is provided with a locking assembly; the locking assembly comprises a central column, a movable eccentric sleeve is arranged on the outer side of the central column, the eccentric sleeve is driven to rotate on the central column through a limiting structure when the first rod rotates, and radial locking is achieved through extrusion between contact surfaces; the contact surface between the outer wall of the central column and the inner wall of the eccentric sleeve is an inclined surface in the axial direction, so that locking in the axial direction is realized through the inclined surface after radial locking.

The telescopic rod in this application has carried out redesign to locking structure wherein, makes it have the dual function of radial locking and axial locking, and convenient operation. Specifically, the method comprises the following steps: after the first rod and the second rod are stretched to proper lengths, the first rod and the second rod are rotated relatively, the first rod drives the eccentric sleeve to rotate on the central column, the contact surface of the eccentric sleeve and the central column is extruded, radial locking is achieved, meanwhile, as the contact surface is an inclined surface, extrusion is conducted in one direction in the axial direction, the contact surface can be locked in the axial direction, the direction is a supporting direction, and therefore the larger the load on the supporting rod is, the larger the axial pressure is, the firmer the axial locking is, and the phenomenon that the unlocking and the dropping cannot occur; on the contrary, when the foldable bicycle is required to be folded, the foldable bicycle is pulled upwards in the axial direction, the extrusion between the inclined contact surfaces is eliminated, the axial locking and the radial locking can be released at one time, and the foldable bicycle is very convenient.

In a preferred embodiment, the central column is provided with several eccentric sleeves, such as two or three eccentric sleeves, on the outside, and the outer wall of the central column is provided with inclined outer walls corresponding to the number of the eccentric sleeves for forming inclined contact surfaces, and the locking is performed by pressing.

In a preferred embodiment, the limiting structure is a groove and a protruding strip which are arranged between the inner wall of the first rod and the eccentric sleeve and matched with each other, and the protruding strip is embedded into the corresponding groove to rotate synchronously.

In a preferred embodiment, the groove is a gap between two adjacent eccentric sleeves, the protruding strip is arranged on the inner wall of the first rod, and the protruding strip is inserted into the groove and can conveniently rotate synchronously.

In a preferred embodiment, the upper and lower both sides of center post are provided with first limiting plate and second limiting plate respectively, eccentric cover is located between first limiting plate and the second limiting plate, and eccentric cover is less than the distance between first limiting plate and the second limiting plate in the ascending length in radial direction, guarantees that when axial tension, eccentric cover can carry out the removal of small distance in the axial direction, removes the locking state.

In a preferred embodiment, one end of the locking component is provided with a mounting seat for mounting on the second rod, and the mounting mode can be a snap fit, an interference fit, a thread fit and the like.

In a preferred embodiment, the eccentric sleeve is an arc-shaped plate, a blocking strip extends inwards from the inner wall of one side of the eccentric sleeve, and the blocking strip can interfere with the side edge of the outer wall protruding from the central column to limit the position, so that the eccentric sleeve cannot rotate and transit.

In a preferred embodiment, the eccentric sleeve is an arc-shaped plate, a part of the inner wall of the eccentric sleeve is a narrow section which is a free section, and no extrusion occurs; and the other part is a thick section, and the inner surface of the thick section is an inclined surface which is contacted with the outer wall of the central column and is an area for locking when extrusion actually occurs.

In a preferred embodiment, a transition inclined plane is arranged between the narrow section and the thick section to ensure smooth rotation.

In a preferred embodiment, the inclination angle a of the inclined surface is 2-10 degrees, preferably 3-5 degrees, so that a good axial locking function can be realized, and pulling and releasing can be conveniently realized.

Compared with the prior art, the utility model discloses following beneficial effect has: the telescopic rod with the locking structure is provided, and has the advantages of radial locking and axial locking functions through improvement of the locking structure, convenience in operation, stable function and high locking strength.

Drawings

Fig. 1 is a perspective view of the telescopic rod of the present invention.

Fig. 2 is a perspective view of the first rod of the present invention.

Fig. 3 is a perspective view of the second rod and the locking assembly thereon.

Fig. 4 is a schematic end view of the second rod and the locking assembly thereon.

FIG. 5 is an elevation view of the secondary rod and locking assembly thereon.

Fig. 6 is a perspective view of the locking assembly of the present invention.

Fig. 7 is a perspective view of the locking assembly with the eccentric sleeve omitted.

Fig. 8 is a front view of the locking assembly with the eccentric sleeve omitted.

Fig. 9 is a first axial schematic view of the middle eccentric sleeve of the present invention.

Fig. 10 is a second axial schematic view of the middle eccentric sleeve of the present invention.

Fig. 11 is a perspective view of the middle eccentric sleeve of the present invention.

Detailed Description

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

The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and are not construed as limiting the present invention, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

In the description of the present invention, it is to be understood that the term: the center, vertically, transversely, length, width, thickness, upper and lower, preceding, back, left and right, vertical, level, top, end, inside and outside, clockwise, anticlockwise etc. indicate position or positional relationship for based on the position or positional relationship that the drawing shows, just for the convenience of description the utility model discloses and simplified description, consequently can not be understood as the restriction of the utility model. Furthermore, the terms: first, second, etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features shown. In the description of the present invention, unless explicitly stated or limited otherwise, the terms: mounting, connecting, etc. should be understood broadly, and those skilled in the art will understand the specific meaning of the terms in this application as they pertain to the particular situation.

Referring to fig. 1 to 11, the telescopic rod with a locking structure in the present application includes a first rod 1 and a second rod 2 sleeved together, wherein one end of the second rod 2 is provided with a locking assembly 3; the locking assembly 3 comprises a central column 34, a movable eccentric sleeve 4 is arranged on the outer side of the central column 34, the eccentric sleeve 4 is driven to rotate on the central column 34 through a limiting structure when the first rod 1 rotates, and radial locking is achieved through extrusion between contact surfaces; the contact surface between the outer wall of the center post 34 and the inner wall of the eccentric sleeve 4 is an inclined surface in the axial direction, so that after radial locking, locking in the axial direction is achieved through the inclined surface.

In addition, in the present application, a plurality of eccentric sleeves 4, such as two or three eccentric sleeves 4, are disposed on the outer side of the central column 34, and two are shown in the embodiment; the outer wall of the central column 34 is provided with inclined outer walls corresponding to the number of the eccentric sleeves 4, and the inclined outer walls are used for forming inclined contact surfaces and are locked through extrusion. Furthermore, the inclination angle a of the inclined plane is 2-10 degrees, preferably 3-5 degrees, a good axial locking function can be realized, and pulling and releasing can be conveniently realized.

In this application, limit structure is for locating the inner wall of first pole 1 and the complex recess and the sand grip between eccentric sleeve 4, and the sand grip is embedded into and carries out synchronous rotation in the recess that corresponds. Specifically, as can be seen from the drawings, the groove is a gap 41 between two adjacent eccentric sleeves 4, the protruding strip 11 is arranged on the inner wall of the first rod 1, and the protruding strip 11 is inserted into the gap 41, so that synchronous rotation can be conveniently performed.

In addition, can also see from the drawing that in this application, the upper and lower both sides of center post 34 are provided with first limiting plate 31 and second limiting plate 32 respectively, eccentric cover 4 is located between first limiting plate 31 and the second limiting plate 32, and eccentric cover 4 is less than the interval between first limiting plate 31 and the second limiting plate 32 in the ascending length of radial direction, guarantees when axial stretching, and the eccentric cover can carry out the removal of small distance on the axial direction, relieves the locking state.

This application is total, locking Assembly 3's one end is equipped with mount pad 33 for on installing second pole 2, can be mounting means such as buckle assembly, interference fit, screw assembly.

Turning specifically to the eccentric sleeve in the present application, as can be seen from fig. 9 to 11, the eccentric sleeve 4 is an arc-shaped plate, a blocking strip 42 extends inwards from the inner wall of one side of the eccentric sleeve 4, and the blocking strip 42 can interfere with the side edge of the outer wall protruding from the central column 34 to limit the position, so that the eccentric sleeve 4 is ensured not to be in rotational transition. In addition, a part of the inner wall of the eccentric sleeve 4 is a narrow section 44 which is a free section, and no extrusion occurs; the other part is a thick section 43, and the inner surface of the thick section 43 is an inclined surface which is in contact with the outer wall of the center post 34 and is an area where the pressing is actually carried out for locking. A transition inclined surface 431 is arranged between the narrow section 44 and the thick section 43 to ensure smooth rotation.

The above description shows that the telescopic rod in the present application has a redesigned locking structure, so that the telescopic rod has dual functions of radial locking and axial locking, and is convenient to operate. Specifically, the method comprises the following steps: after the first rod 1 and the second rod 2 are stretched to proper lengths, the first rod 1 and the second rod 2 are rotated relatively, the first rod 1 drives the eccentric sleeve 4 to rotate on the central column 34, the contact surface of the eccentric sleeve 4 and the central column 34 is extruded, radial locking is achieved, meanwhile, as the contact surface is an inclined surface, extrusion is conducted in one direction in the axial direction, the contact surface can be locked in the axial direction, the direction is a supporting direction, and when the telescopic type telescopic rod is used, the larger the load on the supporting rod is, the larger the axial pressure is, the firmer the axial locking is, and the phenomenon that the unlocking and the dropping cannot occur; on the contrary, when the foldable bicycle is required to be folded, the foldable bicycle is pulled upwards in the axial direction, the extrusion between the inclined contact surfaces is eliminated, the axial locking and the radial locking can be released at one time, and the foldable bicycle is very convenient.

It is above, the utility model provides a telescopic link with locking structure through the improvement to locking structure wherein, makes it have radial locking and axial locking function simultaneously, convenient operation, the stable function, and locking intensity is high.

The protection scope of the present invention includes but is not limited to the above embodiments, the protection scope of the present invention is subject to the claims, and any replacement, deformation, and improvement that can be easily conceived by those skilled in the art made by the present technology all fall into the protection scope of the present invention.

Claims

1. A telescopic rod with a locking structure is characterized by comprising a first rod (1) and a second rod (2) which are sleeved together, wherein one end of the second rod (2) is provided with a locking component (3);

the locking assembly (3) comprises a central column (34), a movable eccentric sleeve (4) is arranged on the outer side of the central column (34), the eccentric sleeve (4) is driven to rotate on the central column (34) through a limiting structure when the first rod (1) rotates, and radial locking is achieved through extrusion between contact surfaces;

the contact surface between the outer wall of the central column (34) and the inner wall of the eccentric sleeve (4) is an inclined surface in the axial direction, so that after radial locking, locking in the axial direction is realized through the inclined surface.

2. A telescopic rod with a locking structure according to claim 1, characterized in that a plurality of eccentric sleeves (4) are provided on the outer side of the central column (34), and the outer wall of the central column (34) is provided with an inclined outer wall corresponding to the number of the eccentric sleeves (4).

3. A telescopic rod with locking structure according to claim 2, characterized in that the limiting structure is a matching groove and rib between the inner wall of the first rod (1) and the eccentric sleeve (4).

4. A telescopic rod with a locking structure according to claim 3, wherein the groove is a gap (41) between two adjacent eccentric sleeves (4), the rib (11) is arranged on the inner wall of the first rod (1), and the rib (11) is inserted into the gap (41).

5. The telescopic rod with the locking structure according to claim 1, wherein a first limiting plate (31) and a second limiting plate (32) are respectively disposed on the upper side and the lower side of the central column (34), the eccentric sleeve (4) is disposed between the first limiting plate (31) and the second limiting plate (32), and the length of the eccentric sleeve (4) in the radial direction is smaller than the distance between the first limiting plate (31) and the second limiting plate (32).

6. A telescopic rod with a locking structure according to claim 1, characterized in that the locking assembly (3) is provided with a mounting seat (33) at one end.

7. A telescopic rod with a locking structure according to any one of claims 1 to 6, wherein the eccentric sleeve (4) is an arc-shaped plate, and a barrier strip (42) is protruded inwards on one side inner wall of the eccentric sleeve (4).

8. A telescopic rod with a locking structure according to any one of claims 1 to 6, wherein the eccentric sleeve (4) is an arc-shaped plate, one part of the inner wall of the eccentric sleeve (4) is a narrow section (44), the other part is a thick section (43), and the inner surface of the thick section (43) is an inclined surface which is in contact with the outer wall of the central column (34).

9. A telescopic rod with a locking structure according to claim 8, characterized in that a transition slope (431) is provided between the narrow section (44) and the thick section (43).

10. The telescopic rod with a locking structure according to any one of claims 1 to 6, wherein the inclined plane has an inclination angle a of 2 ° to 10 °.