TWM497207U - Retractable supporting shaft - Google Patents

Description

Telescopic support rod

This creation relates to the field of adjustment of the length of the rod, and in particular to a telescopic support rod.

The conventional telescopic support rod, as disclosed in the Chinese Patent Publication No. 553332, is slidably inserted into an outer tube by an inner tube, and the relative displacement of the two is used to generate the expansion and contraction to change the overall length. . After adjusting to the required length, a positioning device is used to fix the relative positions of the inner tube and the outer tube to fix the adjusted overall length. Wherein the outer circumference of the inner tube is provided with a plane axially, and the plane is provided with a plurality of latching holes; and a spring handle controlled by the tension spring is pivoted above the inner tube, and one end can be inserted into the inner tube One of the card holes is fixed to fix the relative position of the inner tube and the outer tube. When it is necessary to adjust the length of the support rod, the elastic handle is controlled to be disengaged from the insertion hole, and the inner and outer tubes can be relatively moved. However, in order to prevent the inner tube from sliding freely in the outer tube due to lack of any resistance, a conventional shackle is disposed under the elastic shank in the conventional structure, and the yoke is normally placed on the plane of the inner tube, and A resilient tab is inserted into the latching hole to create a resistance to the sliding of the inner tube.
However, in terms of manufacturing technology, in order to shape the elastic card handle into the shape of the elastic tab, it must undergo complicated forming and heat treatment procedures, and it is difficult to produce and costly.
In view of this, how to improve the above problems is the primary issue that the creative office wants to solve.

The main purpose of the present invention is to provide a telescopic support bar whose overall length can be adjusted and fixed by a control mechanism while providing a safety mechanism to ensure that it is not accidentally touched, providing convenience and safety in use.
To achieve the foregoing objectives, the present invention provides a telescopic support bar that includes:
An outer tube having a slit on one side of one end and a screw hole at the other end, the screw hole being screwed to a pressing member;
An inner tube having one end inserted into the outer tube has one end of the slit, and the other end is provided with a screw hole, the screw hole is screwed to a pressing member; the inner tube is provided with a flat portion facing one side of the outer tube slit. The flat portion is provided with a plurality of insertion holes equally penetrating through the pipe wall;
A control mechanism installed at the junction of the inner and outer tubes includes: a base comprising a pair of support pieces standing on both sides of the flat portion and a bundle ring portion tightly attached to the outer tube; and a plurality of holes penetrating the support piece a limiting member fixed in the opposite hole of the two supporting piece positions, the limiting member extends above the flat portion to block the rotation of the inner tube relative to the outer tube; a control member pivotally disposed at a pivot Between the two supporting pieces, one end is a control end, and the other end is controlled to be inserted into the jack of the inner tube; a torsion spring is respectively provided with a body on both sides of the control member, and is connected by a connecting portion a body, the connecting portion abuts the flat portion of the inner tube, and the two bodies respectively protrude from the abutting portion against the control member; a bumper which is slidably disposed at the opposite ends of the two supporting piece positions, the insurance The rod extends transversely below the control end of the control member, and the two ends of the bumper are respectively a large diameter end and a small diameter end, wherein the outer diameter of the large diameter end is sufficient to be pressed when it slides under the control end The control terminal makes the control terminal uncontrollable.
Wherein, a receiving groove is recessed in the small diameter end of the bumper, and a spring and a steel ball are filled in the groove, wherein the spring generates a thrust on the steel ball, so that a part thereof is exposed outside the receiving groove, thereby forming the small diameter Blocking the slip in the hole.
The above objects and advantages of the present invention are not to be understood in detail from the detailed description and the accompanying drawings.

1‧‧‧Inside the 11‧‧‧ Flat 12‧‧‧ Jack 2‧‧‧External Tube 21‧‧‧Incision 22‧‧‧ Screw Hole 3‧‧‧Resistance 31‧‧‧Cable 32‧ ‧ ‧ Screw 4 ‧ ‧ Controls 41 ‧ ‧ pedestal 411 ‧ ‧ support piece 412 ‧ ‧ rim 413, 413A, 413B, 413C ‧ ‧ hole 42 ‧ ‧ limit parts 43 ‧ ‧ Control member 431‧‧ ‧ pivot 432‧‧ ‧ pivot 433 ‧ ‧ control end 434 ‧ ‧ active end 435 ‧ ‧ 榫 44 ‧ ‧ Torsion spring 441 ‧ ‧ body 442 ‧ ‧ connection 443 ‧ ‧ Abutment 5 ‧ ‧ bumper 51‧ ‧ ‧ large diameter end 52 ‧ ‧ small diameter end 521 ‧ ‧ accommodating slot 522 ‧ ‧ spring 523 ‧ ‧ steel ball

Figure 1 is a perspective view of the creation;
Figure 2 is a schematic view showing the state of use of the creation against the wall surface;
Figure 3 is a perspective exploded view of the creative control mechanism;
Figures 4 and 5 are schematic cross-sectional views of the creative control mechanism.

Please refer to Figures 1 and 2 for the telescopic support bar provided by the creation. It is a control mechanism for inserting an inner tube 1 into an outer tube 2 and sliding through the junction of the two tubes. 4 to determine the length of the support rod. One end of one end of the outer tube 2 is provided with a hole 21 (see FIG. 3), and the other end is provided with a screw hole 22, which is screwed with a pressing member 3; the inner tube 1 is inserted outside One end of the tube 2 is provided with a flat portion 11 facing one side of the slit 21, and the flat portion 11 is provided with a plurality of insertion holes 12 equally penetrating the tube wall, and the other end of the inner tube 1 is provided with a screw hole The screw hole is screwed to a pressing member; wherein the screw hole of the inner tube and the structure of the abutting member are the same as the outer tube, and reference can be made to FIG. 2 . The abutting member 3 includes a pad body 31 and a screw 32. The abutting member 3 is screwed into the screw holes 22 of the inner and outer tubes by the screw 32, and the support rods are supported by the two ends. In the case of the wall surface, the abutting member 3 is pushed out toward both sides by rotation, thereby pressing the support rod against the two wall surfaces.
Next, as shown in FIG. 3, the control mechanism 4 includes a base 41, a limiting member 42, a control member 43, and a torsion spring 44. The base 41 is bent from a metal piece into a pair of support pieces 411 and a bundle of ring portions 412, wherein the bundle ring portion 412 is fastened to the outer tube 2, and the support piece 411 is erected on both sides of the flat portion 11. The support piece 411 is provided with a plurality of holes 413 penetrating through the support pieces, and the holes 413 are respectively located at positions where the two support pieces 411 are opposed to each other. A limiting member 42 is fixed at two ends thereof to the hole 413A opposite to the position of the two supporting pieces 411, and the limiting member 42 extends above the flat portion 11 as shown in FIG. 4, thereby blocking the inner tube 1 Rotating relative to the outer tube 2. In this embodiment, the limiting member 42 is a flat structure.
A control member 43 is bent into an L shape by an elongated plate body. The control member 43 is disposed between the two support pieces 411 and located above the inner tube 1. The control member 43 protrudes from a pivot 431 on both sides, and is pivotally disposed through a pivot 431 to a hole 413B opposite to the support piece 411. One end of the control member 43 is defined as a control end 433, and the other end is defined as an active end 434. The active end 434 is provided with a protruding latch 435. The control member 43 is supported by a torsion spring 44, and the normal position is The working end 434 is abutted on the flat portion 11 of the inner tube 1, and the latch 435 is inserted into one of the insertion holes 12, thereby fixing the relative positions of the inner and outer tubes 1, 2, thereby fixing the overall length of the support rod. . The torsion springs 44 are respectively disposed on the two sides of the control member 43. The two bodies 441 are respectively sleeved on the pivot 432, and the two bodies 441 respectively protrude from an abutting portion 443. The abutting portion 443 is located in the control. The lower part of the inner tube 1 is connected to the flat portion 11 of the inner tube 1 . With the above configuration, as shown in FIG. 5, when the control end 433 of the control member 43 is pressed, the control member 43 is pivoted such that the latch 435 of the active end 434 is disengaged from the insertion hole 12, and the inner tube 1 is It can be moved relative to the outer tube 2 to adjust the overall length of the support rod.
When the control member 43 is pressed to adjust the overall length of the support rod, since the torsion spring 44 is compressed, thereby enhancing the strength of the connecting portion 442 of the torsion spring 44 against the flat portion 11 of the inner tube 1, This forms the force of pressing the inner tube 1 to form a resistance to the movement of the inner tube 1 relative to the outer tube 2, preventing the movement speed from being too fast.
Further, the control mechanism 4 is provided with a safety mechanism to avoid mis-pressing. In detail, as shown in FIGS. 3 and 4, a bumper 5 is disposed in the hole 413C opposite to the position of the two supporting pieces 411, and is located below the control end 433 of the control member 43. The two ends of the bumper 5 are respectively a large diameter end 51 and a small diameter end 52. The two ends are respectively slidably disposed in the holes 413C of the two supporting pieces 411 and are slidable along the axial direction of the bumper 5. The outer diameter of the large diameter end 51 is sufficient to be against the control end 433 when it slides under the control end 433, so that the control end 433 can not be controlled, and the control member 43 can be prevented from being accidentally pressed and released. The state of the outer tube 1, 2 is stuck. When the bumper 5 is pushed to slide the small-diameter end 52 under the control end 433, that is, the large-diameter end 51 is separated from the control end 433, the control end 433 obtains a space for the active pivoting, and can be subjected to Control to adjust the overall length of the support rod.
In addition, a receiving groove 521 is defined in the small-diameter end 52. The slot is filled with a spring 522 and a steel ball 523. The spring 522 generates a thrust on the steel ball 523, so that a part of the steel ball 523 is exposed outside the receiving groove 521. Thereby, the obstruction of the small diameter end 52 slipping in the hole 413C is formed. Accordingly, when the present invention is in use, the bumper 5 does not freely slip in the hole 413C while maintaining the stability of this safety mechanism.
However, the disclosure of the above embodiments is intended to illustrate the present invention and is not intended to limit the present invention, so the replacement of equivalent elements should still be within the scope of this creation.
In summary, it can be made clear to the skilled person that the creation can achieve the aforementioned objectives, and it has already met the requirements of the Patent Law and submitted an application according to law.

1‧‧‧ inner management

11‧‧‧ Flat Department

12‧‧‧ jack

2‧‧‧External management

21‧‧‧ incision

4‧‧‧Control agency

41‧‧‧Base

411‧‧‧Support tablets

412‧‧‧Bundle Department

413, 413A, 413B, 413C‧‧ holes

42‧‧‧Limited parts

43‧‧‧Controls

431‧‧‧ 枢 ear

432‧‧‧ pivot

433‧‧‧Control end

434‧‧‧ active end

435‧‧‧Carmen

44‧‧‧Torque spring

441‧‧‧ Ontology

442‧‧‧Connecting Department

443‧‧‧Apartment

5‧‧‧ bumper

51‧‧‧ Large diameter end

52‧‧‧Small path end

521‧‧‧ accommodating slots

522‧‧ ‧ spring

523‧‧‧ steel balls

Claims (2)

[Item 1] A telescopic support bar comprising:
An outer tube having a slit on one side of one end and a screw hole at the other end, the screw hole being screwed to a pressing member;
An inner tube having one end inserted into the outer tube has one end of the slit, and the other end is provided with a screw hole, the screw hole is screwed to a pressing member; the inner tube is provided with a flat portion facing one side of the outer tube slit. The flat portion is provided with a plurality of insertion holes equally penetrating through the pipe wall;
A control mechanism installed at the junction of the inner and outer tubes includes: a base comprising a pair of support pieces standing on both sides of the flat portion and a bundle ring portion tightly attached to the outer tube; and a plurality of holes penetrating the support piece a limiting member fixed in the opposite hole of the two supporting piece positions, the limiting member extends above the flat portion to block the rotation of the inner tube relative to the outer tube; a control member pivotally disposed at a pivot Between the two supporting pieces, one end is a control end, and the other end is controlled to be inserted into the jack of the inner tube; a torsion spring is respectively provided with a body on both sides of the control member, and is connected by a connecting portion a body, the connecting portion abuts the flat portion of the inner tube, and the two bodies respectively protrude from the abutting portion against the control member; a bumper which is slidably disposed at the opposite ends of the two supporting piece positions, the insurance The rod extends transversely below the control end of the control member, and the two ends of the bumper are respectively a large diameter end and a small diameter end, wherein the outer diameter of the large diameter end is sufficient to be pressed when it slides under the control end The control terminal makes the control terminal uncontrollable. [Item 2] The telescopic support rod according to claim 1, wherein a recessed groove is recessed in the small diameter end of the bumper, and the slot is filled with a spring and a steel ball, wherein the spring generates a thrust on the steel ball to make a part thereof Exposed to the outside of the accommodating groove, thereby forming an obstruction of the sliding of the small-diameter end in the hole.