Freely telescopic hovering device

Abstract

The utility model belongs to the field of telescopic devices, and relates to a free telescopic hovering device which comprises a first rod piece and a second rod piece, and the second rod piece is provided with a containing cavity. One part of the first rod piece is movably arranged in the containing cavity, and the first rod piece can move up and down in the containing cavity and can also rotate; a preset distance is formed between the first rod piece and the second rod piece, and the first rod piece and the second rod piece can move up and down and rotate relative to each other; the device further comprises a free hovering unit, and the first rod piece and the second rod piece are relatively fixed or loosened at a preset position through the free hovering unit. The first rod piece and the second rod piece can rotate relative to each other, and the first rod piece and the second rod piece are restrained through the free hovering unit to form relative fixation. After the structure is adopted, the beneficial effects are that the manufacturing is simple, the cost of adopted parts is low, and accessories can be adjusted to adapt to various load scenes.

Description

Technical Field

[0001] The utility model belongs to the technical field of telescopic devices, in particular to a freely telescopic suspension device. Background Art

[0002] Currently, many telescopic rod fixing devices on the market achieve telescopic and fixing by means of knob squeezing, screws and handle switches, or by designing movable protrusions. The knob squeezing method requires adding a knob component to the product appearance, which is abrupt and inconvenient to place; the screw and handle switch method requires the use of adjustment tools such as screwdrivers to achieve lifting and lowering, which is troublesome to operate; the design of protrusions on the telescopic device destroys the appearance of the device, resulting in market restrictions, so it is necessary to make improvements. Utility Model Content

[0003] In order to solve the above-mentioned problems in the prior art, the utility model provides a freely retractable suspension device, which is simple to manufacture, low in cost, and can adjust accessories to adapt to various load scenarios.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] As one aspect of the utility model, a freely retractable suspension device is provided, which comprises: a first rod and a second rod, wherein the second rod has a receiving cavity; a part of the first rod is movably arranged in the receiving cavity, and the first rod can move up and down and rotate in the receiving cavity; there is a preset distance between the first rod and the second rod, and the first rod and the second rod can move up and down and rotate relative to each other;

[0006] The free-suspending unit is also included, and the first rod and the second rod are relatively fixed or loosened at a preset position by the free-suspending unit; the first rod and the second rod can rotate relative to each other, and the first rod and the second rod are constrained by the free-suspending unit to form a relative fixation; the reverse rotation releases the constraint of the free-suspending unit, and the first rod and the second rod can move relative to each other.

[0007] Optionally, the rotation angle between the first rod and the second rod is 15° to 45°.

[0008] Optionally, a limiting member is further included, wherein the limiting member is connected to the second rod and cooperates with the first rod.

[0009] Optionally, the limit member includes a limit member body, a first clearance hole for the first rod member to pass through is opened on the limit member body, a connecting limit portion is extended from the edge of the first clearance hole, the connecting limit portion has a preset length, the outer circle of the connecting limit portion is in contact with the accommodating cavity, the inner circle of the connecting limit portion cooperates with the first rod member, the diameter of the inner circle of the connecting limit portion is the same as the diameter of the first clearance hole, and the first rod member exerts an extrusion state on the connecting limit portion, so that the connecting limit portion can be connected to the accommodating cavity.

[0010] Optionally, an annular limiting protrusion is formed on the outer ring of the connecting limiting part, and a limiting recess matched with the limiting protrusion is provided in the accommodating cavity, and the limiting member is connected to the second rod member through the cooperation between the limiting protrusion and the limiting recess; the connecting limiting part is provided with a plurality of through grooves at intervals along the axial direction, and the connecting limiting part is divided by the through grooves to form a plurality of tensioning blocks.

[0011] Optionally, the free suspension unit includes a damping bracket, which is connected to one end of the first rod, and the damping bracket and the first rod are integrally formed or detachably connected to the first rod; a plurality of positioning protrusions arranged at intervals are formed on the outer wall of the damping bracket along the axial direction; a limiting protrusion for limiting the movement of the positioning protrusion is formed in the accommodating cavity along the axial direction; the number of the limiting protrusions is the same as the number of the positioning protrusions, each positioning protrusion is located between two corresponding adjacent limiting protrusions, and the width between the two adjacent limiting protrusions is used as the maximum rotation angle between the first rod and the second rod;

[0012] A damping block connecting portion is formed on the damping bracket at the side of the locking protrusion, and a damping block is arranged on the damping block connecting portion. Part of the damping block is located outside the damping bracket and matches with the corresponding limiting protrusion.

[0013] Optionally, a chamfer is formed on a side of the damping block away from the locking protrusion.

[0014] Optionally, the middle position of the damping block protrudes in the opposite direction to the center line of the damping bracket to form an abutment convex portion, and a preset avoidance space is provided between the abutment convex portion and the inner surface of the damping block connecting portion.

[0015] Optionally, the lower end surface of the connection limiting portion abuts against the upper end surface of the limiting protrusion.

[0016] Optionally, the diameter of the damping bracket is greater than the diameter of the first rod.

[0017] The beneficial effects of the free-retractable suspension device of the utility model are specifically embodied in: simple production, low-cost components, and adjustable accessories to suit a variety of load scenarios; breaking the original structure, redesigning the suspension structure, and achieving the suspension action through the friction of the damping block, which is simple and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings in the specification, which constitute a part of the present application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0019] Figure 1 This is a structural stereogram of the freely retractable suspension device of Example 1 of the utility model;

[0020] Figure 2 This is a structural front view of the freely retractable suspension device of Example 1 of the utility model;

[0021] Figure 3 for Figure 2 Middle AA section view;

[0022] Figure 4 for Figure 2 Middle BB section view;

[0023] Figure 5 This is a diagram showing the state coordination between the damping block and the corresponding limiting protrusion in Example 1 of the utility model;

[0024] Figure 6 This is a structural exploded view of the freely retractable suspension device of Example 1 of the utility model;

[0025] Figure 7 It is a three-dimensional diagram of the state coordination between the damping block and the corresponding limiting protrusion of Example 2 of the utility model;

[0026] Figure 8 It is a cross-sectional view of the state coordination between the damping block and the corresponding limiting protrusion of Example 2 of the utility model. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the utility model and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0028] Example 1

[0029] A freely retractable suspension device according to an embodiment of the present application, such as Figure 1-Figure 3 As shown, it comprises: a first rod 1 and a second rod 2, wherein the second rod 2 has a receiving cavity 21; a part of the first rod 1 is movably arranged in the receiving cavity 21, and the end of the other part of the first rod 1 is used to connect the load, and how to connect with the load is a prior art and will not be repeated here; the relative height between the load and the ground is adjusted by the relative position of the first rod 1 in the receiving cavity 21; the first rod 1 can move up and down in the receiving cavity 21, and can also rotate; there is a preset distance between the first rod 1 and the second rod 2, and the first rod 1 and the second rod 2 can move up and down and rotate relative to each other;

[0030] It also includes a free hovering unit 3, through which the first rod 1 and the second rod 2 are relatively fixed or loosened at a preset position; the first rod 1 and the second rod 2 can rotate relative to each other, and the first rod 1 and the second rod 2 are constrained by the free hovering unit 3 to form a relative fixation; the reverse rotation releases the constraint of the free hovering unit 3, and the first rod 1 and the second rod 2 can move relative to each other.

[0031] In one embodiment, without losing the friction in the up and down movement directions, the friction in the rotation between the first rod 1 and the second rod 2 is reduced to a minimum as much as possible, which can improve the product experience.

[0032] In one embodiment, if Figure 1-Figure 3 and Figure 6 As shown, a limiting member 4 is also included, and the main function of the limiting member 4 is to prevent the first rod 1 from being pulled out of the accommodating cavity 21 of the second rod 2.

[0033] In one embodiment, if Figure 6As shown, the limiter 4 includes a limiter body 41, on which a first clearance hole 42 for the first rod 1 to pass is formed, and the edge of the first clearance hole 42 extends to form a connecting limiter 43, and the connecting limiter 43 has a preset length. The connecting limiter 43 is annular, and its outer ring is in contact with the accommodating cavity 21. The inner ring of the connecting limiter 43 cooperates with the first rod 1, and the diameter of the inner ring of the connecting limiter 43 is the same as the diameter of the first clearance hole 42. The first rod 1 exerts an extrusion state on the connecting limiter 42, so that the connecting limiter 43 can be connected to the accommodating cavity 21, thereby preventing the first rod 1 from being pulled out of the accommodating cavity 21 of the second rod 2; the connecting limiter An annular limiting protrusion 44 is formed on the outer ring of 43, and a limiting recess 22 matched with the limiting protrusion 44 is provided in the accommodating cavity 21. The limiting member 4 is connected to the second rod 2 through the cooperation of the limiting protrusion 44 and the limiting recess 22; the connecting limiting portion 43 is provided with a plurality of through grooves 45 according to the gap along the axial direction, and the connecting limiting portion 43 is divided by the through grooves 45 to form a plurality of tensioning blocks, and the tensioning blocks have a certain elasticity, which further plays a role of tensioning and limiting; during installation, the first rod 1 is first assembled to the second rod 2, and then the first clearance hole 42 of the limiting member 4 passes through the first rod 1 and is connected to the first rod 2 to realize the connection of the limiting member 4, and the limiting member 4 plays a limiting role on the first rod 1.

[0034] In one embodiment, if Figure 4-Figure 6 As shown, the free suspension unit 3 includes a damping bracket 31, which is connected to one end of the first rod 1 away from the load connection end. The damping bracket 31 and the first rod 1 are integrally formed or the damping bracket 31 and the first rod 1 are detachably connected; the diameter of the damping bracket 31 is greater than the diameter of the first rod 1, that is, the diameter of the damping bracket 31 is the sum of the diameter of the first rod 1 and the outer circle diameter of the connection limiter 43, and the limiter 4 limits the end of the damping bracket 31 so that the first rod 1 cannot be pulled out of the second rod 2;

[0035] The outer wall of the damping bracket 31 is formed with a plurality of locking protrusions 32 arranged at intervals along the axial direction; as an example, the number of the locking protrusions 32 is six; the accommodating cavity 21 is formed with a limiting protrusion 22 along the axial direction for limiting the movement of the locking protrusion 32; the number of the limiting protrusions 22 is the same as the number of the locking protrusions 32, each locking protrusion 32 is located between two corresponding adjacent limiting protrusions 22, and the width between two adjacent limiting protrusions 22 is used as the maximum rotation angle between the first rod 1 and the second rod 2;

[0036] The damping bracket 31 is provided with a damping block connecting portion 33 on the side of the locking protrusion 32. As an example, the damping block connecting portion 33 is a connecting groove. The damping block connecting portion 33 is provided with a damping block 34. As an example, the damping block 34 is made of a silicone material, and the silicone is arranged in the connecting groove by filling or assembling. Part of the damping block 34 is located outside the damping bracket 31 and cooperates with the corresponding limiting protrusion 22. The first rod 1 and the second rod 2 rotate relative to each other or the first rod 1 rotates, and the second rod 2 does not move, so that the damping block 34 is 4 is rotated in the direction away from the positioning protrusion 32, and the first rod 1 and the second rod 2 are rubbed on the surface of the corresponding limiting protrusion 22 by the damping block 34, thereby realizing stepless hovering; or the first rod 1 is stationary, the second rod 2 is rotated, and the damping block 34 is rotated in the direction of the positioning protrusion 32, and the first rod 1 and the second rod 2 are rubbed on the surface of the corresponding limiting protrusion 22 by the damping block 34, thereby realizing stepless hovering; the reversal releases the constraint of the damping block 34, and the first rod 1 and the second rod 2 can move relative to each other; Figure 5 As shown, the friction surface of the damping block 34 cooperates with the surface of the corresponding limiting protrusion 22, and the relative fixation between the first rod 1 and the second rod 2 is achieved through friction between the two. After the rotation, the friction surface of the damping block 34 leaves the surface of the limiting protrusion 22, the friction force is released, and the first rod 1 and the second rod 2 can achieve up and down movement.

[0037] In one embodiment, if Figure 4 and Figure 6 As shown, a chamfer 35 is formed on one side of the damping block 34 away from the locking protrusion 32 to facilitate the initial contact between the damping block 34 and the corresponding limiting protrusion 22 .

[0038] In this embodiment, the rotation angle between the first rod 1 and the second rod 2 is 15° to 45°, and the friction coefficient between the first rod 1 and the second rod 2 can be adjusted by the interference between the damping block 34 and the corresponding limiting protrusion 22 and the surface roughness of the damping block 34, and the applicable scenarios are very wide; the specific number of the damping blocks 34 is adjusted according to the diameter of the second rod 2, for example: the user accepts that the rotation angle between the first rod 1 and the second rod 2 is 45°, the number of the damping blocks 34 is 360 / 45 / 2=4 blocks, and the rotation angle between the first rod 1 and the second rod 2 is 45°, so the user needs to consume torque in the process of rotating 45°; for example, the user accepts that the rotation angle between the first rod 1 and the second rod 2 is 15°, the number of the damping blocks 34 is 360 / 15 / 2=12 blocks, and the user needs to consume 15° of torque; as an example, the number of the damping blocks 34 in this embodiment is six blocks, and the rotation angle between the first rod 1 and the second rod 2 is 25°.

[0039] In one embodiment, if Figure 3 As shown, the lower end surface of the connection limit portion 43 abuts against the upper end surface of the limit protrusion 22, so that the limit member 4 can be installed more conveniently without confirming whether the limit member 4 is installed in place.

[0040] Example 2

[0041] The difference between the second embodiment and the first embodiment is that the structure of the damping block 34 is different. Figure 7-Figure 8 As shown, as an example, the number of the damping blocks 34 in this embodiment is four; the four damping blocks 34 are arranged on the damping block connecting portion 33 of the damping bracket 31 in a ring array.

[0042] Specifically, the middle position of the damping block 34 protrudes in the opposite direction of the center line of the damping bracket 31 to form an abutting protrusion 341, and a preset air avoidance space is provided between the abutting protrusion 341 and the inner surface of the damping block connecting portion 33; when the abutting protrusion 341 cooperates with the limiting protrusion 22, the limiting protrusion 22 squeezes the abutting protrusion 341, and the preset air avoidance space has a pressure-bearing function. At the same time, the preset air avoidance space can also squeeze the abutting protrusion 341, so that the friction between the abutting protrusion 341 and the limiting protrusion 22 is greater, thereby achieving a better hovering effect. In addition, due to the preset air avoidance space, the initial rotational force is smaller during rotation, making the operation more labor-saving.

[0043] As described above, the freely retractable suspension device of the present application is simple to manufacture, uses low-cost components, and can adjust accessories to suit a variety of load scenarios.

[0044] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0045] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0046] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0047] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0048] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0049] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the present invention.

Claims

1. A freely retractable hovering device, characterized in that: It includes: A first rod and a second rod, wherein the second rod has a receiving cavity; a portion of the first rod is movably disposed in the receiving cavity, and the first rod can move up and down and rotate in the receiving cavity; a preset distance is provided between the first rod and the second rod, and the first rod and the second rod can move up and down and rotate relative to each other; The free-suspending unit is also included, and the first rod and the second rod are relatively fixed or loosened at a preset position by the free-suspending unit; the first rod and the second rod can rotate relative to each other, and the first rod and the second rod are constrained by the free-suspending unit to form a relative fixation; the reverse rotation releases the constraint of the free-suspending unit, and the first rod and the second rod can move relative to each other.

2. The freely retractable suspension device according to claim 1, characterized in that: The rotation angle between the first rod and the second rod is 15° to 45°.

3. The freely retractable suspension device according to claim 1 or 2, characterized in that: It also includes a limiting member, which is connected to the second rod and matched with the first rod.

4. The freely retractable suspension device according to claim 3, characterized in that: The limit member includes a limit member body, a first clearance hole for the first rod member to pass through is opened on the limit member body, a connecting limit portion is extended from the edge of the first clearance hole, the connecting limit portion has a preset length, the outer circle of the connecting limit portion is in contact with the accommodating cavity, the inner circle of the connecting limit portion cooperates with the first rod member, the diameter of the inner circle of the connecting limit portion is the same as the diameter of the first clearance hole, and the first rod member exerts an extrusion state on the connecting limit portion, so that the connecting limit portion can be connected to the accommodating cavity.

5. The freely retractable suspension device according to claim 4, characterized in that: An annular limiting protrusion is formed on the outer ring of the connecting limiting part, and a limiting recess matched with the limiting protrusion is provided in the accommodating cavity. The limiting member is connected to the second rod member through the cooperation between the limiting protrusion and the limiting recess; the connecting limiting part is provided with a plurality of through grooves at intervals along the axial direction, and the connecting limiting part is divided by the through grooves to form a plurality of tensioning blocks.

6. The freely retractable suspension device according to claim 1 or 2, characterized in that: The free suspension unit comprises a damping bracket, which is connected to one end of the first rod, and the damping bracket and the first rod are integrally formed or detachably connected to the first rod; a plurality of positioning protrusions arranged at intervals are formed on the outer wall of the damping bracket along the axial direction; a limiting protrusion for limiting the movement of the positioning protrusion is formed in the accommodating cavity along the axial direction; the number of the limiting protrusions is the same as the number of the positioning protrusions, each positioning protrusion is located between two corresponding adjacent limiting protrusions, and the width between the two adjacent limiting protrusions is used as the maximum rotation angle between the first rod and the second rod; A damping block connecting portion is formed on the damping bracket at the side of the locking protrusion, and a damping block is arranged on the damping block connecting portion. Part of the damping block is located outside the damping bracket and matches with the corresponding limiting protrusion.

7. The freely retractable suspension device according to claim 6, characterized in that: A chamfer is formed on one side of the damping block away from the locking protrusion.

8. The freely retractable suspension device according to claim 6, characterized in that: The middle position of the damping block protrudes in the opposite direction of the center line of the damping bracket to form an abutting convex portion, and a preset avoidance space is provided between the abutting convex portion and the inner surface of the connecting portion of the damping block.

9. The freely retractable suspension device according to claim 5, characterized in that: The lower end surface of the connection limiting portion abuts against the upper end surface of the limiting protrusion.

10. The freely retractable suspension device according to claim 6, characterized in that: The diameter of the damping bracket is greater than the diameter of the first rod.

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