Novel telescopic rod structure

Abstract

The utility model relates to the technical field of household articles, and discloses a novel telescopic rod structure which comprises an outer pipe, an inner pipe and a supporting seat, one end of the inner pipe is provided with an expansion and contraction mechanism which is sleeved in an inner cavity of the outer pipe in a sliding mode, the other ends of the outer pipe and the inner pipe are connected with the supporting seat, and an anti-falling mechanism is further arranged between the inner pipe and the outer pipe. The anti-falling mechanism comprises a limiting structure arranged on the outer pipe and a clamping structure arranged at the end part of the inner pipe; the problems that in the prior art, the specific position of an inner pipe relative to an outer pipe cannot be controlled when a telescopic rod is installed in a drawing mode, excessive sliding is often caused after drawing, or bearing is affected due to the fact that the number of overlapped parts of the inner pipe and the outer pipe is small after drawing are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of household articles, in particular to a novel telescopic rod structure. Background Art

[0002] Telescopic rods are popular among people due to their wide range of uses. In daily life, they can be placed in wardrobes to hang clothes, or placed between two corresponding walls to hang items such as shower curtains. Most of the current telescopic rods adopt a telescopic structure, which achieves a telescopic effect by installing a telescopic inner tube inside the outer tube to adjust its support length;

[0003] For example, CN207384066U is a shower curtain rod with adjustable tension. When installing and using the shower curtain rod, since the inner tube slides and telescopes in the outer tube, the specific position of the inner tube in the outer tube cannot be known during the pulling and installation. Excessive pulling and pulling often causes the inner tube to slip off the outer tube, and the entire tube needs to be disassembled and reassembled before it can be installed again. At the same time, even if there is no slippage, the inner tube and the outer tube have little overlapping part, which will cause the outer tube and the inner tube to sag and deform downward after bearing weight, thereby affecting the supporting stability of the telescopic rod.

[0004] Therefore, it is urgent for technicians in this field to develop a new telescopic rod structure that has a firm and stable support and is not easy to pull out and slip to meet people's daily needs. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides a new telescopic rod structure, which overcomes the problems in the prior art that the specific position of the inner tube relative to the outer tube cannot be controlled when the telescopic rod is pulled out and installed, and the telescopic rod often slips due to excessive pulling out, or the inner tube and the outer tube have little overlap after pulling out, affecting the load-bearing capacity.

[0006] In order to achieve the above objectives, this application adopts the following technical solutions.

[0007] The utility model discloses a novel telescopic rod structure, comprising: an outer tube, an inner tube and a support seat, wherein one end of the inner tube is provided with an expansion and contraction mechanism which is slidably sleeved in the inner cavity of the outer tube, the free ends of the outer tube and the inner tube are connected with the support seat, an anti-slip mechanism is further provided between the inner tube and the outer tube, and the anti-slip mechanism comprises a limiting structure arranged on the outer tube and a locking structure arranged at the end of the inner tube.

[0008] A further improvement is that the expansion and contraction mechanism includes: an expansion rod arranged at one end of the inner tube and an expansion sleeve sleeved on the expansion rod, the expansion rod is provided with an outer conical threaded portion that is adapted to the inner conical threaded portion provided in the inner hole of the expansion sleeve, the expansion rod is also provided with a connecting portion and an expansion sleeve stopper portion in sequence at the end away from the inner tube, a small diameter end and a large diameter end are provided on the outside of the expansion sleeve, the small diameter end is adapted to be mounted on the connecting portion, a plurality of axial split grooves are provided at the small diameter end, the axial split grooves extend to the annular connecting portion at the large diameter end, the outer diameter of the annular connecting portion is smaller than the inner diameter of the outer tube and not smaller than the outer diameter of the inner tube, and the annular connecting portion is a locking structure adapted to the limiting structure.

[0009] A further improvement is that the limiting structure is an inwardly contracted annular groove arranged on the outer tube, and the inner diameter of the inwardly contracted annular groove is smaller than the outer diameter of the annular connecting portion.

[0010] A further improvement is that an adjustment mechanism is provided between the inner tube and the support seat, the adjustment mechanism is composed of an adjustment seat arranged on the inner side of the support seat and an adjustment rod arranged at the other end of the inner tube, and the adjustment rod is provided with an adjustment thread that is adapted to adjust with the thread inside the adjustment seat.

[0011] A further improvement is that: an annular protrusion is provided at the connecting end between the adjustment seat and the support seat, and an anti-slip structure is provided on the side of the adjustment seat away from the support seat.

[0012] A further improvement is that a fixed connecting piece is provided between the outer tube and the support seat, one end of the fixed connecting piece is provided with an annular protrusion which is rotatably adapted to be connected to the support seat, and the other end is sleeved on the outer tube; an anti-slip pad is also provided on the outer side of the support seat, and anti-slip grooves are provided on the outer side of the anti-slip pad.

[0013] A further improvement is that an external locking mechanism is also provided at the connection between the outer tube and the inner tube, one end of the external locking mechanism is adapted to be embedded in the outer tube, and the other end is adapted to be assembled with the inner tube.

[0014] A further improvement is that the outer locking mechanism is configured as a shrink sleeve, and the connecting end with the inner tube is configured as a smooth transition slope structure.

[0015] A further improvement is that the external locking mechanism includes an external locking stud and a locking sleeve which are sleeved on the end of the outer tube, a step hole is arranged inside the external locking stud, one end of the step hole is adapted to the outer wall of the outer tube, and the other end is adapted to the outer wall of the inner tube, an outwardly inclined conical surface is arranged on the outer side of the external locking stud, an external thread structure is arranged on the outwardly inclined conical surface to be adapted to the internal thread arranged on the locking sleeve, and a plurality of expansion and contraction joint structures are also arranged on the external thread structure.

[0016] A further improvement is that a protrusion is further provided at the front end of the step hole, locking grooves adapted to the protrusion are further provided at intervals on the outer side of the inner tube, and a strip structure is further provided on the outer side of the locking sleeve.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model can effectively prevent the inner tube from slipping off the outer tube during the pulling and installation by arranging an anti-slip mechanism between the inner tube and the outer tube that slide against each other. The anti-slip mechanism can also ensure the relative overlapping limit of the inner tube and the outer tube so that the telescopic rod meets the load-bearing requirements. The application has a simple structure, is easy to assemble and has a stable and firm support. The setting of the external locking mechanism can not only play a decorative role, but also has the function of increasing friction and anti-slip locking, making the locking more firm and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0020] Figure 2 It is a schematic diagram of the explosion structure of the utility model.

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model.

[0022] Figure 4 It is a schematic diagram of the partial cross-sectional structure of the limit position and the anti-slip mechanism of the utility model.

[0023] Figure 5 It is a three-dimensional structural schematic diagram of the expansion sleeve of the utility model.

[0024] Figure 6 It is a partial cross-sectional view of an outer locking mechanism of another embodiment of the utility model.

[0025] Figure 7 A schematic diagram of the three-dimensional structure of the external locking stud of the utility model.

[0026] Figure ID:

[0027] Outer tube 1, inner tube 2, locking groove 21, support seat 3, anti-slip pad 31, anti-slip mechanism 4, limiting structure 41, expansion and contraction mechanism 5, expansion rod 51, expansion sleeve 52, outer cone thread portion 511, connecting portion 512, expansion sleeve stop portion 513, inner cone thread 521, small diameter end 522, large diameter end 523, axial split groove 524, annular connecting portion 525, external locking mechanism 6, external locking stud 61, step hole 611, external thread structure 612, expansion and contraction seam structure 613, protrusion 614, locking sleeve 62, strip structure 621, internal thread 622, fixed connection part 7, adjustment mechanism 8, adjustment seat 81, adjustment rod 82. DETAILED DESCRIPTION

[0028] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings. This embodiment is only used to explain the present invention and does not constitute a limitation on the protection scope of the present invention.

[0029] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the combination or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0030] The present invention will be further described below with reference to the accompanying drawings and in combination with embodiments.

[0031] Figure 1-5 The figure shows a novel telescopic rod structure, comprising an outer tube 1, an inner tube 2 and a support seat 3, an expansion and contraction mechanism 5 is provided at one end of the inner tube 2 and slidably sleeved in the inner cavity of the outer tube 1, the free ends of the outer tube 1 and the inner tube 2 are connected to the support seat 3, and an anti-slip mechanism 4 is also provided between the inner tube 2 and the outer tube 1, and the anti-slip mechanism 4 includes a limiting structure 41 arranged on the outer tube and a locking structure arranged at the end of the inner tube 2; by arranging the anti-slip mechanism 4 between the inner tube 2 and the outer tube 1 that slide against each other, the inner tube can be effectively prevented from slipping off the outer tube during the pulling and installation, and at the same time, the setting of the anti-slip mechanism can also effectively ensure the minimum limit of the relative overlap between the inner tube and the outer tube, so that the overall telescopic rod meets the load-bearing requirements, and the present application has a simple structure, is easy to assemble and has a stable and firm support.

[0032] An optional implementation method, such as Figure 2-5As shown, the expansion and contraction mechanism 5 includes: an expansion rod 51 arranged at one end of the inner tube 2 and an expansion sleeve 52 sleeved on the expansion rod 51, the expansion rod 51 is provided with an outer tapered threaded portion 511 adapted to the inner tapered threaded portion 521 provided in the inner hole of the expansion sleeve 52, the expansion rod 51 is further provided with a connecting portion 512 and an expansion sleeve stopper 513 at one end away from the inner tube 2, a small diameter end 522 and a large diameter end 523 are provided on the outer side of the expansion sleeve 52, the small diameter end 522 is adapted to be fitted on the connecting portion 512, and the small diameter end 52 A plurality of axial slotted grooves 524 are provided at the two ends, and the axial slotted grooves 524 extend to the annular connecting portion 525 of the large diameter end 523. The outer diameter of the annular connecting portion 525 is smaller than the inner diameter of the outer tube and not smaller than the outer diameter of the inner tube. The annular connecting portion 525 is a locking structure adapted to the limiting structure 41; the limiting structure 41 is an inwardly contracted annular groove arranged on the outer tube 1, and the inner diameter of the inwardly contracted annular groove is smaller than the outer diameter of the annular connecting portion 525; the limiting structure 41 can also be set as a plurality of annular concave protrusion structures. During installation, the inner tube 2 is rotated, and the expansion and contraction mechanism 5 at the end of the inner tube is loosened relative to the inner wall of the outer tube 1 and can be pulled and slid in the outer tube. When the expansion sleeve 52 of the expansion and contraction mechanism 5 slides to the limiting structure 41 provided on the outer tube, the outer diameter of the annular connecting portion 525 at one end of the expansion sleeve 52 is larger than the inner shrinking annular groove on the outer tube 1 and is blocked by the limiting block, thereby preventing the inner tube from slipping due to excessive pulling and pulling, and playing the role of limiting and anti-slipping without increasing the cost. The bearing capacity and the limiting overlapping length of the telescopic rod can be obtained through experiments to determine the position of the inner shrinking annular groove, thereby effectively ensuring the installation bearing strength of the telescopic rod, and solving the problem that the outer tube and the inner tube are sunken and deformed due to less overlap and reduced bearing strength, thereby affecting the supporting stability of the telescopic rod.

[0033] An optional implementation method, such as Figure 1-3 As shown: an adjustment mechanism 8 is also provided between the inner tube 2 and the support seat 3. The adjustment mechanism 8 is composed of an adjustment seat 81 provided inside the support seat 3 and an adjustment rod 82 provided at the other end of the inner tube 2. The adjustment rod 82 is provided with an adjustment thread that is adapted to the thread provided inside the adjustment seat 81; an annular protrusion is provided at the connection end between the adjustment seat 81 and the support seat 3, and an anti-slip structure is provided on the side of the adjustment seat 81 away from the support seat 3. When the telescopic rod is pre-adjusted to the required length for fixing, the adjustment mechanism 8 is used to support and position it to prevent it from falling off the relative support surface. The anti-slip structure can be set in a spiral shape or a grid shape or a spline curve shape with an angle of one degree or other concave and convex alternating structures, so that it is easy to adjust and tighten by hand.

[0034] An optional implementation method, such as Figure 1 , 2 As shown in FIG. 3 , a fixed connection member 7 is further provided between the outer tube 1 and the support seat 3 . One end of the fixed connection member 7 is provided with an annular protrusion which is rotatably adapted to be connected to the support seat 3 , and the other end is sleeved on the outer tube 1 .

[0035] In an optional embodiment, an external locking mechanism 6 is further provided at the connection between the outer tube 1 and the inner tube 2, one end of the external locking mechanism 6 is adapted to fit inside the outer tube 1, and the other end is adapted to fit inside the inner tube 2; the external locking mechanism 6 is configured as a shrink sleeve, and the end connected to the inner tube 2 is configured as a smooth transition slope structure. The external locking mechanism 6 provided with a shrink sleeve can not only be decorated beautifully, but also has the function of increasing friction and anti-slip locking.

[0036] An optional implementation method, such as Figure 1 , 6 As shown in Figure 7, the external locking mechanism 6 includes an external locking stud 61 and a locking sleeve 62 which are sleeved on the end of the outer tube 1. A stepped hole 611 is arranged inside the external locking stud 61. One end of the stepped hole 611 is matched with the outer wall of the outer tube 1, and the other end is matched with the outer wall of the inner tube 2. An outwardly inclined conical surface is arranged on the outer side of the external locking stud 61. An external thread structure 612 is arranged on the outwardly inclined conical surface to match the internal thread 622 arranged on the locking sleeve 62. A plurality of expansion and contraction joint structures 613 are also arranged on the external thread structure 612. By adding an external locking mechanism 6 having an external locking stud 61 and a locking sleeve 62 at the connection between the inner and outer tubes, the loosening of the internal expansion mechanism due to insufficient friction can be effectively prevented, so that the locking is more firm and reliable.

[0037] An optional implementation method, such as Figure 1 , 6 As shown: a protrusion 614 is further provided at the front end of the stepped hole 611, locking grooves 21 adapted to the protrusion 614 are further provided at intervals on the outer side of the inner tube 2, and a strip structure 621 is further provided on the outer side of the locking sleeve 62; the strip structure 621 is provided so that the locking can be adjusted conveniently and reliably by hand.

[0038] An optional implementation method, such as Figure 2 , 3 As shown, an anti-skid pad 31 is also provided on the outer side of the support seat 3, and an anti-skid pattern is provided on the outer side of the anti-skid pad 31.

[0039] The embodiments disclosed in the present utility model are preferred embodiments, but are not limited thereto. Ordinary technicians in this field can easily understand the spirit of the present utility model based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present utility model, they are all within the protection scope of the present utility model.

Claims

1. A novel telescopic rod structure, comprising: An outer tube (1), an inner tube (2) and a support seat (3), wherein one end of the inner tube (2) is provided with an expansion and contraction mechanism (5) which is slidably sleeved in the inner cavity of the outer tube (1), and the free ends of the outer tube (1) and the inner tube (2) are connected to the support seat (3), characterized in that an anti-slip mechanism (4) is further provided between the inner tube (2) and the outer tube (1), and the anti-slip mechanism (4) comprises a limiting structure (41) arranged on the outer tube and a locking structure arranged at the end of the inner tube (2).

2. According to claim 1, the novel telescopic rod structure is characterized in that: The expansion and contraction mechanism (5) comprises: an expansion rod (51) arranged at one end of the inner tube (2) and an expansion sleeve (52) sleeved on the expansion rod (51); the expansion rod (51) is provided with an outer tapered thread portion (511) adapted to be matched with an inner tapered thread portion (521) provided on the inner hole of the expansion sleeve (52); the end of the expansion rod (51) away from the inner tube (2) is also provided with a connecting portion (512) and an expansion sleeve stopper portion (513) in sequence; the outer side of the expansion sleeve (52) is provided with a small diameter end ( The small diameter end (522) and the large diameter end (523), the small diameter end (522) being adapted to be mounted on the connecting portion (512), the small diameter end (522) being provided with a plurality of axial slotted grooves (524), the axial slotted grooves (524) extending to an annular connecting portion (525) of the large diameter end (523), the outer diameter of the annular connecting portion (525) being smaller than the inner diameter of the outer tube and not smaller than the outer diameter of the inner tube, the annular connecting portion (525) being a locking structure adapted to the limiting structure (41).

3. A novel telescopic rod structure according to claim 1 or 2, characterized in that: The limiting structure (41) is an inwardly contracted annular groove provided on the outer tube (1), and the inner diameter of the inwardly contracted annular groove is smaller than the outer diameter of the annular connecting portion (525).

4. According to claim 1, the novel telescopic rod structure is characterized in that: An adjustment mechanism (8) is also provided between the inner tube (2) and the support seat (3), the adjustment mechanism (8) comprising an adjustment seat (81) provided inside the support seat (3) and an adjustment rod (82) provided at the other end of the inner tube (2), the adjustment rod (82) being provided with an adjustment thread adapted to adjust with a thread provided inside the adjustment seat (81).

5. According to claim 4, the novel telescopic rod structure is characterized in that: An annular protrusion is provided at the connection end between the adjustment seat (81) and the support seat (3), and an anti-slip structure is provided on the side of the adjustment seat (81) away from the support seat (3).

6. According to claim 1, the novel telescopic rod structure is characterized in that: A fixed connection piece (7) is further provided between the outer tube (1) and the support seat (3); one end of the fixed connection piece (7) is provided with an annular protrusion which is rotatably adapted to be connected to the support seat (3), and the other end is sleeved on the outer tube (1); an anti-skid pad (31) is further provided on the outer side of the support seat (3), and an anti-skid pattern is provided on the outer side of the anti-skid pad (31).

7. The novel telescopic rod structure according to claim 1 is characterized in that: An external locking mechanism (6) is also provided at the connection between the outer tube (1) and the inner tube (2); one end of the external locking mechanism (6) is adapted to be embedded in the outer tube (1), and the other end is adapted to be assembled with the inner tube (2).

8. The novel telescopic rod structure according to claim 7 is characterized in that: The outer locking mechanism (6) is configured as a shrink sleeve, and the end connected to the inner tube (2) is configured as a smooth transition slope structure.

9. The novel telescopic rod structure according to claim 7, characterized in that: The external locking mechanism (6) comprises an external locking stud (61) and a locking sleeve (62) which are sleeved on the end of the outer tube (1); a stepped hole (611) is provided inside the external locking stud (61); one end of the stepped hole (611) is adapted to fit the outer wall of the outer tube (1), and the other end is adapted to fit the outer wall of the inner tube (2); an outwardly inclined conical surface is provided on the outer side of the external locking stud (61); an external thread structure (612) is provided on the outwardly inclined conical surface and is adapted to fit the internal thread (622) provided on the locking sleeve (62); and a plurality of expansion and contraction joint structures (613) are also provided on the external thread structure (612).

10. The novel telescopic rod structure according to claim 9, characterized in that: A protrusion (614) is also provided at the front end of the stepped hole (611), locking grooves (21) adapted to the protrusion (614) are also provided at intervals on the outside of the inner tube (2), and a strip structure (621) is also provided on the outside of the locking sleeve (62).

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