Improved selfie stick telescopic locking structure

Abstract

The utility model relates to an improved selfie stick telescopic locking structure which comprises a fixed base, a piston and a cam. The piston and the cam are installed in the fixed base. A rotating shaft suitable for mounting the cam is arranged in the center of one end of the fixed base, and an annular elastic arm is arranged by taking the rotating shaft as the center; the upper end surface of the piston is provided with two sections of semicircular slope surfaces; two wedge-shaped surfaces matched with the two sections of slope surfaces respectively are arranged on one surface, opposite to the piston, of the cam, and when the cam rotates towards a preset direction, the wedge-shaped surfaces are suitable for extruding the slope surfaces, so that the piston moves downwards and extrudes the annular elastic arm, and the elastic arm is propped against the inner wall of the second rod piece. The concentric rod is attractive in appearance, and the defects that a traditional concentric rod cannot be locked or is complex in structure and inconvenient to operate even if the traditional concentric rod can be locked are overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of selfie sticks, and in particular to an improved telescopic locking structure of a selfie stick. Background Art

[0002] At present, the retractable selfie sticks on the market are all composed of multiple sections. Each section of the rod is divided into two types: concentric rod and eccentric rod. The upper and lower sections of the eccentric rod are due to the eccentricity of the rod itself. When twisted against each other, an interference fit will be generated between the eccentric rods to achieve the purpose of locking the two sections of the rod, effectively preventing the rod from sliding up and down. When the rod is screwed back to its original state, it can be freely extended and slid up and down without any damping force; the concentric rod is to install one or two interference fit anti-slip plates at the upper end of each section of the rod, so that when the two rods slide on the upper line, they are damped by the anti-slip plate, so that the rods cannot slide up and down easily. The thickness of the anti-slip plate is adjusted to control the size of the damping force, so that the two sections of the rod can be pulled apart by a certain force, and after being pulled apart, they can only be retracted under a certain force, thereby achieving the purpose of the selfie stick to stretch up and down.

[0003] The defect of the above-mentioned prior art is that the eccentric rod does not look round and is not very aesthetically pleasing. The concentric rod cannot be locked, and when subjected to a certain force during use, the rod will slide up and down, resulting in a change in the telescopic length. At the same time, due to the tolerance matching between the rods, the damping anti-slip plate of the concentric rod needs to be equipped with anti-slip plates of different thicknesses between each section of the rod to achieve the use effect, resulting in poor interchangeability of the product, which leads to low production efficiency and high production costs. Utility Model Content

[0004] Based on this, it is necessary to provide an improved selfie stick telescopic locking structure to solve the problem that the concentric rods cannot be locked without affecting the appearance.

[0005] In order to achieve the above-mentioned purpose of the invention, the utility model adopts the following technical solutions.

[0006] The utility model provides an improved telescopic locking structure of a selfie stick, the selfie stick comprising a first rod and a second rod which are mutually nested, the first rod and the second rod being able to slide relatively along the length direction of the selfie stick, the telescopic locking structure being arranged between the first rod and the second rod, the telescopic locking structure of the selfie stick comprising a fixed base, a piston installed in the fixed base and a cam driving the piston, wherein:

[0007] A connecting portion suitable for being fixedly inserted into the first rod is disposed at one end of the fixed base, and a rotating shaft suitable for installing the piston and the cam is disposed at the center of the other end, and an annular elastic arm is disposed with the rotating shaft as the center, and the annular elastic arm encloses a funnel-shaped accommodation space;

[0008] The piston is in the shape of an inverted truncated cone as a whole, and its upper end surface is provided with two sections of semicircular slope surfaces, and the two sections of slope surfaces are centrally symmetrically arranged relative to the rotating shaft; when the piston is installed in the funnel-shaped accommodating space, its side surface just fits with the inner wall of the annular elastic arm;

[0009] At least one groove is provided on the side of the cam, and at least one ridge is provided on the inner wall of the second rod along the length direction, and the ridge is suitable for being inserted into the groove, so that the second rod is suitable for driving the cam to rotate through the ridge;

[0010] The cam is pressed against the piston and is fastened to the rotating shaft by a screw; two wedge-shaped surfaces respectively matching the two slope surfaces are arranged on a side of the cam opposite to the piston, and when the cam rotates in a predetermined direction, the wedge-shaped surfaces are suitable for squeezing the slope surfaces so that the piston moves downward and squeezes the annular elastic arm to press the elastic arm against the inner wall of the second rod.

[0011] Preferably, the annular elastic arm is an integrated structure made of soft elastic material.

[0012] Preferably, the annular elastic arm is a split structure made of hard elastic material.

[0013] Preferably, the lower portion of the annular elastic arm is thicker than the upper portion.

[0014] Preferably, the annular elastic arm is composed of 2-4 petals, a gap is left between two adjacent petals, and a guide piece suitable for being inserted into the gap is provided on the side wall of the piston.

[0015] Preferably, at least one protrusion is provided on the connecting portion, and a buckle hole suitable for buckling the protrusion is provided at a corresponding position of the first rod.

[0016] Preferably, an annular damping member is provided in the middle of the fixed base, and the damping member is suitable for forming an interference fit with the inner wall of the second rod.

[0017] The utility model is provided with a telescopic locking structure between the first rod and the second rod, and the telescopic locking structure includes a fixed base, a piston and a cam installed in the fixed base, the overall structure has few parts, and the cam is driven to rotate by the convex edge arranged on the inner wall of the second rod, so it is easy to use and has high reliability. The utility model is not only beautiful in appearance, but also solves the disadvantages of the traditional concentric rod that cannot be locked or even if it can be locked, the structure is complicated and the operation is inconvenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the exploded structure of the improved telescopic locking structure of the selfie stick in the first embodiment;

[0019] Figure 2 This is a schematic diagram of the overall structure of the fixed base in the first embodiment;

[0020] Figure 3 is a schematic cross-sectional structural diagram of the fixed base in the first embodiment;

[0021] Figure 4 Schematic diagram of the overall structure of the piston in the first embodiment;

[0022] Figure 5 is a schematic diagram of the overall structure of the cam in the first embodiment;

[0023] Figure 6 This is a schematic diagram of the structure after the fixed base and the piston are assembled in the first embodiment;

[0024] Figure 7 This is a schematic diagram of the overall structure of the piston in the second embodiment;

[0025] Figure 8 It is a schematic diagram of the structure after the fixed base and the piston are assembled in the second embodiment.

[0026] The realization of the purpose of the utility model and its functions and principles will be further explained in the specific implementation manner in conjunction with the accompanying drawings. DETAILED DESCRIPTION

[0027] The following is a further description with reference to the accompanying drawings and specific embodiments.

[0028] Embodiment 1:

[0029] like Figure 1 As shown, this embodiment provides an improved selfie stick telescopic locking structure 100, which is composed of at least two rods, including a first rod 10 and a second rod 20, which are coaxially nested and can slide relative to each other along the length direction of the selfie stick to achieve telescopic extension of the selfie stick. The selfie stick telescopic locking structure 100 is arranged between the first rod 10 and the second rod 20, and includes a fixed base 110, a piston 120 installed in the fixed base 110, and a cam 130 driving the piston 120.

[0030] Specifically, refer to Figure 2 and 3 As shown, one end of the fixed base 110 is provided with a connecting portion 111 for fixedly inserting into the first rod 10, and the center position of the other end is provided with a rotating shaft 112 suitable for installing the above-mentioned piston 120 and cam 130. An annular elastic arm 113 is also provided with the rotating shaft 112 as the center. The annular elastic arm 113 encloses a funnel-shaped accommodating space 114, and the piston 120 is installed in the accommodating space 114.

[0031] Reference Figure 3 As shown, the piston 120 is in the shape of an inverted truncated cone, and its upper end surface is provided with two semicircular slopes 121, and the two slopes 121 are centrally symmetrically arranged relative to the rotating shaft 112. After the piston 120 is installed in the accommodating space 114, it can move up and down along the rotating shaft 112, so that the side surface of the piston 120 is always in contact with the inner wall of the annular elastic arm 113.

[0032] like Figure 4 As shown, the side of the cam 130 of this embodiment is provided with at least one groove 131, and the inner wall of the second rod 20 is correspondingly provided with at least one ridge 201 along the length direction, and the ridge 201 is suitable for being inserted into the groove 131, so that the second rod 20 can drive the cam 130 to rotate through the ridge 201. In order to disperse the force of the groove 131, the number of the grooves 131 is preferably set to 2-4. Correspondingly, the inner wall of the second rod 20 is provided with 2-4 ridges 201, and each ridge 201 is inserted into a groove 131 respectively.

[0033] Reference Figure 1 , 5 and Figure 6 As shown, the cam 130 is pressed against the piston 120 and is fastened to the rotating shaft 112 by a screw 140; two wedge-shaped surfaces 132 respectively matching with the two slope surfaces 121 are provided on a side of the cam 130 opposite to the piston 120. When the cam 130 rotates in a predetermined direction, the wedge-shaped surfaces 132 are suitable for squeezing the slope surfaces 121, so that the piston 120 moves downward and squeezes the annular elastic arm 113, so that the annular elastic arm 113 is pressed against the inner wall of the second rod 20, thereby locking the second rod 20.

[0034] The wedge-shaped surface 132 described in this embodiment refers to an inclined surface formed by a wedge-shaped block, a groove with a gradually changing depth, or other similar structures.

[0035] The annular elastic arm 113 of the present embodiment is a split structure made of a hard elastic material, with a thin upper portion and a thick lower portion, so that its longitudinal section is trapezoidal.

[0036] To facilitate the deformation of the annular elastic arm 113, the annular elastic arm 113 of this embodiment is composed of 2-4 petals, with a gap between two adjacent petals; a guide piece 122 suitable for being inserted into the gap is provided on the side wall of the piston 120, so that the piston 120 will not rotate during the movement.

[0037] To facilitate assembly, at least one protrusion 115 is provided on the connecting portion 111 of the fixed base 110. Correspondingly, at least one buckle hole 101 is provided at the end of the first rod member 10. The protrusion 115 is suitable for buckling into the buckle hole 101, so that the connecting portion 111 can be inserted into the first rod member 10 and is not easily pulled out, thereby enhancing the stability of the connection between the fixed base 110 and the first rod member 10 and further improving the reliability of the product.

[0038] The working principle of the improved selfie stick telescopic locking structure 100 of this embodiment is as follows:

[0039] Insert the connecting portion 111 of the fixed base 110 into the first rod 10 and snap the protrusion 115 into the buckle hole 101 to achieve fixed connection between the fixed base and the first rod 10. Then, install the piston 120 and the cam 130 onto the rotating shaft 112 of the fixed base 110 in turn, and use the screw 140 to press and fix the cam 130 so that the piston 120 and the cam 130 will not fall out. Then insert the assembled selfie stick telescopic locking structure 100 into the second rod 20, and align the groove 131 on the cam 130 with the ridge 201 on the inner wall of the second rod 20, so that the ridge 201 snaps into the groove 131.

[0040] When it is necessary to lock the second rod 20, the second rod 20 is rotated in a predetermined direction (which can be designed to be clockwise or counterclockwise) by a certain angle. At this time, the ridge 201 drives the cam 130 to rotate around the rotating shaft 112, and the wedge surface 132 on the cam 130 and the slope surface 121 on the piston 120 slide relative to each other, pushing the piston 120 toward the inside of the fixed base 110, thereby squeezing the annular elastic arm 113, causing the annular elastic arm 113 to deform and expand outward. Under the action of friction, the expanded annular elastic arm 113 fits tightly with the second rod 20. Since the fixed base 110 and the first rod 10 are fixedly connected, the locking between the first rod 10 and the second rod 20 is achieved.

[0041] To unlock, it is only necessary to rotate the second rod 20 in the opposite direction. At this time, the cam 130 rotates in the opposite direction driven by the ridge 201, and the wedge surface 132 on the cam 130 is separated from the slope surface 121 on the piston 120. The piston 120 loses the thrust of the cam 130 and returns to its initial position under the elastic force of the annular elastic arm 113. The annular elastic arm 113 returns to its initial shape, thereby not squeezing the first rod 10. The first rod 10 can be freely extended and retracted to achieve unlocking.

[0042] In addition, in order to prevent the first rod 10 and the second rod 20 from sliding relative to each other easily, an annular damping member 116 is provided in the middle of the fixed base 110 in this embodiment. The damping member 116 is suitable for forming an interference fit with the inner wall of the second rod 20, so that the selfie stick can maintain the current length even if it is not locked and is not subjected to force, and can be extended or shortened when subjected to a certain force, thereby improving the operating experience of the selfie stick.

[0043] Embodiment 2:

[0044] Reference Figure 7 and Figure 8 As shown, the telescopic locking structure of the selfie stick of this embodiment is basically the same as the structure in the first embodiment, and the main difference is that the annular elastic arm 113' is an integrated structure made of a soft elastic material, and at the same time, the above-mentioned guide plate is not provided on the side of the piston 120'. After the piston 120' is pushed by the cam, it squeezes the annular elastic arm 113', causing the annular elastic arm 113' to deform under force. Since the annular elastic arm 113' is made of a soft material, the force required for deformation is small, and the thrust generated by the cam on the piston 120' is sufficient to deform the annular elastic arm 113' and lock the second rod. In addition, designing the annular elastic arm 113' as an integrated structure can also improve its overall stability and simplify the structure of the piston 120' (no guide plate is required).

[0045] In summary, the utility model sets a telescopic locking structure between the first rod and the second rod, and the telescopic locking structure includes a fixed base, a piston and a cam installed in the fixed base. The overall structure has few parts, and the cam is driven to rotate by the ridges arranged on the inner wall of the second rod, so it is easy to use and has high reliability. The utility model not only has a beautiful appearance, but also solves the disadvantages of traditional concentric rods that cannot be locked or even if they can be locked, the structure is complicated and the operation is inconvenient.

[0046] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. An improved telescopic locking structure of a selfie stick, the selfie stick comprising a first rod and a second rod nested with each other, the first rod and the second rod being able to slide relatively along the length direction of the selfie stick, the telescopic locking structure being arranged between the first rod and the second rod, characterized in that: The selfie stick telescopic locking structure comprises a fixed base, a piston installed in the fixed base, and a cam driving the piston, wherein: A connecting portion suitable for being fixedly inserted into the first rod is disposed at one end of the fixed base, and a rotating shaft suitable for installing the piston and the cam is disposed at the center of the other end, and an annular elastic arm is disposed with the rotating shaft as the center, and the annular elastic arm encloses a funnel-shaped accommodation space; The piston is in the shape of an inverted truncated cone as a whole, and its upper end surface is provided with two sections of semicircular slope surfaces, and the two sections of slope surfaces are centrally symmetrically arranged relative to the rotating shaft; when the piston is installed in the funnel-shaped accommodating space, its side surface just fits with the inner wall of the annular elastic arm; At least one groove is provided on the side of the cam, and at least one ridge is provided on the inner wall of the second rod along the length direction, and the ridge is suitable for being inserted into the groove, so that the second rod is suitable for driving the cam to rotate through the ridge; The cam is pressed against the piston and is fastened to the rotating shaft by a screw; two wedge-shaped surfaces respectively matching the two slope surfaces are arranged on a side of the cam opposite to the piston, and when the cam rotates in a predetermined direction, the wedge-shaped surfaces are suitable for squeezing the slope surfaces so that the piston moves downward and squeezes the annular elastic arm to press the elastic arm against the inner wall of the second rod.

2. The telescopic locking structure of the selfie stick according to claim 1, characterized in that: The annular elastic arm is an integrated structure made of soft elastic material.

3. The telescopic locking structure of the selfie stick according to claim 1, characterized in that: The annular elastic arm is a split structure made of hard elastic material.

4. The telescopic locking structure of the selfie stick according to claim 2 or 3, characterized in that: The lower part of the annular elastic arm is thicker than the upper part.

5. The telescopic locking structure of the selfie stick according to claim 3, characterized in that: The annular elastic arm is composed of 2-4 petals, a gap is left between two adjacent petals, and a guide piece suitable for being inserted into the gap is arranged on the side wall of the piston.

6. The telescopic locking structure of the selfie stick according to claim 1, characterized in that: At least one protrusion is arranged on the connecting portion, and a buckle hole suitable for buckling the protrusion is arranged at a corresponding position of the first rod.

7. The telescopic locking structure of the selfie stick according to claim 1, characterized in that: An annular damping member is arranged in the middle of the fixed base, and the damping member is suitable for forming an interference fit with the inner wall of the second rod.

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