Free locking telescopic rod

Abstract

The utility model discloses a free locking telescopic rod, which comprises an outer rod body and an inner rod body, the inner rod body is inserted into the outer rod body and can telescopically move relative to the outer rod body, one end part of the inner rod body is provided with a conical part which is fixedly connected with the inner rod body, the conical part comprises a conical root and a conical tip, the conical part is provided with a threaded bulge structure which is positioned between the conical root and the conical tip, and the threaded bulge structure is connected with the inner rod body. Locking expansion sleeves capable of moving forwards and backwards along the conical surface of the conical part are arranged on the two sides of the conical part, when the locking expansion sleeves move, the outer end faces of the locking expansion sleeves make light contact with the inner wall of the outer rod body in a frictional mode, and a plurality of protruding friction parts capable of being connected with the threaded protruding structures in an abutting mode are arranged on the inner end faces of the locking expansion sleeves. When the outer rod body and the inner rod body stretch out and draw back to proper positions, the inner rod body is rotated to enable the conical piece to rotate so that the two locking expansion sleeves can move towards the conical root of the conical piece at the same time, the outer end faces of the locking expansion sleeves abut against the inner wall of the outer rod body, and free positioning and locking are achieved. The technical problems that an existing telescopic rod locking structure is unstable, and the use experience is poor are solved to a certain degree.

Description

Technical Field

[0001] The utility model relates to the technical field of telescopic rods, in particular to a free locking telescopic rod. Background Art

[0002] In the related art, telescopic rods are widely used in curtain telescopic rods and wardrobe clothes hanging rods. The telescopic rods can be conveniently applied to usage scenarios of different widths and can be locked when extended to a suitable position. The Chinese utility model patent with application number 201720140330.X discloses a freely retractable curtain rod, which includes an outer rod and an inner rod. The inner rod is inserted into the outer rod and can be relatively telescopically moved. The inner end of the inner rod is connected to a positioning mechanism, a positioning expansion sleeve and an expansion sleeve driving member. The expansion sleeve driving member has a front stopper, a conical rod, a rear stopper and a cylindrical rod in sequence. The end of the cylindrical rod is movably connected or fixedly connected to the inner end of the inner rod. The positioning expansion sleeve is threadedly connected to the conical rod, and the side wall of the positioning expansion sleeve has an expansion opening; rotating the inner and outer rods can make the positioning expansion sleeve and the expansion sleeve driving member rotate relative to each other, and at the same time make the expansion opening of the positioning expansion sleeve expand or shrink, so as to realize the movement of the positioning expansion sleeve; when the positioning expansion sleeve moves to the small end of the conical rod, the positioning expansion sleeve and the outer rod are in light contact with friction, and the inner and outer rods can be relatively telescopically moved; when the positioning expansion sleeve moves to the large end of the conical rod, the positioning expansion sleeve expands from the expansion opening and is pressed against the outer rod, and the inner and outer rods are clamped and connected. Its structure is complex and the locking structure is unstable. After a slight locking feeling is felt when it is turned in one direction, if the general consumer turns it a little more out of inertia, the outer rod and the inner rod will become loose. In other words, the effect of locking by turning in one direction cannot be achieved. Sometimes, it will become loose when turned more, resulting in a poor user experience and inconvenient installation.

[0003] In view of this, it is necessary to improve the existing telescopic rod. Utility Model Content

[0004] The purpose of the utility model is to solve one of the problems existing in the related art, in particular to solve the technical problems of the existing telescopic rods having complex structures, unstable locking structures, poor user experience and inconvenient installation to a certain extent, and to provide a free locking telescopic rod.

[0005] The above purpose is achieved through the following technical solutions:

[0006] A free locking telescopic rod, comprising an outer rod body and an inner rod body, wherein the inner rod body is inserted into the outer rod body and can telescopically move relative to the outer rod body, a conical member fixedly connected to the inner rod body is provided at one end of the inner rod body, the conical member comprises a conical root and a conical tip, a threaded protrusion structure located between the conical root and the conical tip is provided on the conical member, locking expansion sleeves which can be displaced back and forth along the conical surface are provided on both sides of the conical member, when the locking expansion sleeve is displaced, its outer end face is in light contact with the inner wall of the outer rod body with friction, and a plurality of protruding friction parts which can abut against the threaded protrusion structure are provided on the inner end face of the locking expansion sleeve;

[0007] When the outer rod and the inner rod are extended to a suitable position, rotating the inner rod can rotate the cone part so that the two locking expansion sleeves are simultaneously displaced toward the cone root of the cone part, and the outer end surface of the locking expansion sleeve presses against the inner wall of the outer rod to achieve free positioning locking.

[0008] Furthermore, the two locking expansion sleeves are arranged opposite to each other, and a plurality of the raised friction portions are arranged at intervals.

[0009] Furthermore, the raised friction portion is a convex point or a strip-shaped convex block.

[0010] Furthermore, the raised friction portion is a cylindrical convex point.

[0011] Furthermore, a guide slide column is provided at the front end of the cone tip for allowing the locking expansion sleeve to axially displace with the cone member as the axis, and a limit portion is provided at the front end of the guide slide column for limiting the displacement stroke of the locking expansion sleeve.

[0012] Furthermore, the locking expansion sleeve comprises a first expansion sleeve and a second expansion sleeve, and a clearance groove is provided between the first expansion sleeve and the second expansion sleeve.

[0013] Furthermore, a guide slide limit block is provided at the front end of the second expansion sleeve, and the two locking expansion sleeves are arranged relative to each other so that the two guide slide limit blocks are positioned relative to each other.

[0014] Furthermore, the outer end surface of the locking expansion sleeve is provided with a plurality of convex ribs which can increase its locking force.

[0015] Furthermore, the convex ribs are arranged in a transversely spaced array, a longitudinally spaced array, or an obliquely distributed arrangement.

[0016] Furthermore, the locking expansion sleeve is made of PP, PC, POM or nylon material.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] The utility model has a reliable structure and a stable locking structure. When the outer rod body and the inner rod body are telescoped to a suitable position, the two locking expansion sleeves are arranged on both sides of the cone part, and a raised friction part is arranged in the locking expansion sleeve. When the inner rod body rotates, the two locking expansion sleeves can generate a suitable friction force, thereby realizing locking during rotation, providing a better user experience and convenient installation. The telescopic rod is not easy to fall off after being locked, and has good safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the embodiment Figure 1 ;

[0020] Figure 2 It is a three-dimensional schematic diagram of the embodiment Figure 2 ;

[0021] Figure 3 It is a schematic diagram of the decomposition in the embodiment Figure 1 ;

[0022] Figure 4 It is a schematic diagram of the decomposition in the embodiment Figure 2 ;

[0023] Figure 5 It is a schematic diagram of the decomposition in the embodiment Figure 3 ;

[0024] Figure 6 is a schematic diagram of a first embodiment of a locking expansion sleeve;

[0025] Figure 7 is a schematic diagram of a second embodiment of a locking expansion sleeve;

[0026] Figure 8 Schematic diagram of the locking expansion sleeve in the embodiment;

[0027] Fig. 9 is the main view in the embodiment;

[0028] Fig.10 It is a reference diagram of the usage status. DETAILED DESCRIPTION

[0029] The following will further describe the content, technical problems solved and beneficial effects of the present application in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the scope of the present application.

[0030] See also Figure 1-Figure 5The present application discloses a free locking telescopic rod, comprising an outer rod body 1 and an inner rod body 2, wherein the inner rod body 2 is inserted into the outer rod body 1 and can be telescopically moved relative to the outer rod body 1, and a cone member 3 is provided at one end of the inner rod body 2 and fixedly connected thereto, the cone member 3 comprises a cone root 31 and a cone tip 32, a threaded protrusion structure 33 is provided on the cone member 3 between the cone root 31 and the cone tip 32, and locking expansion sleeves 4 which can be displaced back and forth along the cone surface are provided on both sides of the cone member 3, when the locking expansion sleeve 4 is displaced, its outer end face is in light contact with the inner wall of the outer rod body 1 with friction, and a plurality of protruding friction portions 41 which can abut against the threaded protrusion structure 33 are provided on the inner end face of the locking expansion sleeve 4;

[0031] When the outer rod body 1 and the inner rod body 2 are extended and retracted to the appropriate position, rotating the inner rod body 2 can rotate the cone part 3 so that the two locking expansion sleeves 4 are simultaneously displaced toward the cone root of the cone part 3, and the outer end surface of the locking expansion sleeve 4 presses against the inner wall of the outer rod body 1 to achieve free positioning locking.

[0032] The utility model has a reliable structure and a stable locking structure. When the outer rod body and the inner rod body are telescoped to a suitable position, the two locking expansion sleeves are arranged on both sides of the cone part, and a raised friction part is arranged in the locking expansion sleeve. When the inner rod body rotates, the two locking expansion sleeves can generate a suitable friction force, thereby realizing locking during rotation, providing a better user experience and convenient installation. The telescopic rod is not easy to fall off after being locked, and has good safety.

[0033] In the specific embodiment of the present application, in order to achieve better friction, the two locking expansion sleeves 4 are arranged opposite to each other, and the plurality of raised friction parts 41 are arranged at intervals. In practical applications, they are arranged at equal intervals or arranged at high and low intervals. The advantage is that the locking effect is good and there will be no loosening.

[0034] Specifically, the raised friction portion 41 is a convex point (such as Figure 6 shown) or strip-shaped protrusions (not shown in the figure).

[0035] In the preferred embodiment of the present utility model, Figure 6 , Figure 7 As shown, the raised friction part 41 is a cylindrical convex point. The advantage is that by setting the raised friction part 41 as a plurality of cylindrical convex points, it can abut against the threaded protrusion structure 33 at multiple points, evenly bear the force, have a better friction effect, achieve a better locking effect, and be easy to use.

[0036] In a specific embodiment of the utility model, a guide slide 34 is provided at the front end of the cone tip 32 for axial displacement of the locking expansion sleeve 4 with the cone member 3 as the axis, and a limiter 35 is provided at the front end of the guide slide 34 for limiting the displacement stroke of the locking expansion sleeve 4. The advantages are reasonable structural setting, convenient installation, better rotation locking effect of the outer rod body and the inner rod body, and better rotation feel, which improves the user's installation experience.

[0037] In a specific embodiment of the utility model, the locking expansion sleeve 4 includes a first expansion sleeve 42 and a second expansion sleeve 43, and a clearance groove 44 is provided between the first expansion sleeve 42 and the second expansion sleeve 43. Preferably, a guide slide limit block 45 is provided at the front end of the second expansion sleeve 43, and the two locking expansion sleeves 4 are arranged relative to each other so that the two guide slide limit blocks 45 are located relative to each other. The advantages are symmetrical balance, stable movement stroke of the two locking expansion sleeves 4, and good locking effect.

[0038] In order to achieve a better locking effect, the outer end surface of the locking expansion sleeve 4 is provided with a plurality of convex ribs 46 that can increase its locking force. Preferably, the convex ribs 46 are arranged in a transversely spaced array, a longitudinally spaced array, or an inclined distribution. The advantages are that the structure is reasonably arranged, appropriate friction is increased, and the user experience is better.

[0039] In some embodiments of the utility model, the locking sleeve 4 is made of PP, PC, POM or nylon. It is easy to produce and process, and has a good locking effect. The locking sleeve can also be replaced by some soft or elastic materials during production. Fig.10 As shown, mounting seats can be provided at both ends of the outer rod body 1 and the inner rod body 2, so that they can be telescopically installed and pressed against the window frame, door frame or wardrobe, which is convenient to use. The utility model is particularly provided with two locking expansion sleeves on both sides of the cone, and the locking expansion sleeves are provided with raised friction parts, so that the two locking expansion sleeves can generate appropriate friction when the inner rod body rotates. When the outer rod body and the inner rod body are telescopically installed in a suitable position, rotation and locking are realized, and the installation locking structure is reliable, which is suitable for wide promotion and application.

[0040] As described above, one or more implementation methods are provided in combination with specific contents, and the specific implementation of this application is not limited to these descriptions. Any similarity or similarity with the method, structure, etc. of this application, or some technical deductions or replacements made based on the concept of this application should be regarded as the protection scope of this application.

Claims

1. A free locking telescopic rod, comprising an outer rod body (1) and an inner rod body (2), wherein the inner rod body (2) is inserted into the outer rod body (1) and can telescopically move relative to the outer rod body (1), and one end of the inner rod body (2) is provided with a cone member (3) fixedly connected thereto, the cone member (3) comprising a cone root (31) and a cone tip (32), characterized in that: The conical member (3) is provided with a threaded protrusion structure (33) located between the cone root (31) and the cone tip (32); locking expansion sleeves (4) are provided on both sides of the conical member (3) and can be displaced forward and backward along the cone surface; when the locking expansion sleeve (4) is displaced, its outer end surface is in light contact with the inner wall of the outer rod body (1) with friction; and a plurality of protruding friction portions (41) are provided on the inner end surface of the locking expansion sleeve (4) and can abut against the threaded protrusion structure (33); When the outer rod body (1) and the inner rod body (2) are extended and retracted to a suitable position, the inner rod body (2) is rotated to rotate the cone member (3), thereby causing the two locking expansion sleeves (4) to simultaneously move toward the cone root of the cone member (3), and the outer end surface of the locking expansion sleeve (4) presses against the inner wall of the outer rod body (1), thereby achieving positioning free locking.

2. A free locking telescopic rod according to claim 1, characterized in that: The two locking expansion sleeves (4) are arranged opposite to each other, and a plurality of the raised friction portions (41) are arranged at intervals.

3. A free locking telescopic rod according to claim 2, characterized in that: The raised friction portion (41) is a raised point or a strip-shaped raised block.

4. A free locking telescopic rod according to claim 3, characterized in that: The raised friction portion (41) is a cylindrical convex point.

5. The free locking telescopic rod according to claim 1, characterized in that: A guide slide column (34) is provided at the front end of the cone tip (32) for allowing the locking expansion sleeve (4) to axially displace with the cone member (3) as the axis, and a limit portion (35) is provided at the front end of the guide slide column (34) for limiting the displacement stroke of the locking expansion sleeve (4).

6. A free locking telescopic rod according to claim 5, characterized in that: The locking expansion sleeve (4) comprises a first expansion sleeve (42) and a second expansion sleeve (43), and a clearance groove (44) is provided between the first expansion sleeve (42) and the second expansion sleeve (43).

7. A free locking telescopic rod according to claim 6, characterized in that: A guide slide limit block (45) is provided at the front end of the second expansion sleeve (43), and the two locking expansion sleeves (4) are arranged relative to each other so that the two guide slide limit blocks (45) are located relative to each other.

8. The free locking telescopic rod according to claim 1, characterized in that: The outer end surface of the locking expansion sleeve (4) is provided with a plurality of convex ribs (46) which can increase the locking force thereof.

9. The free locking telescopic rod according to claim 8, characterized in that: The convex ribs (46) are arranged in a transversely spaced array, a longitudinally spaced array, or an obliquely distributed arrangement.

10. The free locking telescopic rod according to claim 1, characterized in that: The locking expansion sleeve (4) is made of PP, PC, POM or nylon material.

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