KR200319382Y1 - Length-adjustable broomstick - Google Patents

Abstract

The present invention relates to a broom that can be adjusted in length, the inner tube formed with a predetermined diameter and length, the outer tube formed to a size that can accommodate the inner tube to maintain a suitable clearance gap, and the inner and outer tube In the adjustable length broom comprising a fixed connector coupled to the overlapping portion to secure or loosen them mutually detachable; The fixed connector is formed on the outer circumferential surface of the tapered spiral surface is gradually reduced in diameter toward the front end of the engaging frame is formed, the wedge member is fixed to the receiving end of the inner tube and the rear end of the enlarged diameter portion, A spiral surface is formed between the wedge member and the outer tube in a locked state to allow free rotation and is coupled to the tapered spiral surface on the inner circumferential surface thereof so that the outer tube can be rotated along the tapered spiral surface. It is characterized in that it comprises a retractable expansion medium. Therefore, according to the broom of the present invention, the length can be adjusted freely by a simple operation of rotating the inner and outer tubes in the forward and reverse directions according to the height of the user, and the wedge-type fastening method combined with rotation Therefore, the fixed state is very solid to allow the user to have the reliability of the product.

Description

Length-adjustable broomstick}

The present invention relates to a broom that can be adjusted in length, in particular, the length can be adjusted freely simply by rotating the inner and outer tube in the forward and reverse direction according to the user's height, wedge type that combines rotation Since the fastening method of the fastening state is very solid, the product is related to the adjustable broom to further improve the reliability of the product.

In general, tubular-type household goods such as cleaning tools or climbing sticks commonly used around us as products produced recently, the length is adjusted according to the user's height to provide convenience. It is often seen that the length of the tubular body is adjustable.

That is, conventionally, various types of pipe assemblies are applied to cleaning tools such as mop rods, brooms or vacuum cleaner suction tubes, or walking sticks for climbing, so that their length can be properly adjusted according to the user's height difference. Many have been proposed, many of which have already been put into practical use as products.

As the conventional tube length adjusting device, a plurality of grooves are formed at regular intervals along the length direction on the outer circumferential surface of the inner tube so that the length can be adjusted by stepping the elastic protrusions inside the outer tube in the groove. The representative example is that the connecting port surrounding the connection part in the state in which the inner and outer tube overlaps, so as to be adjusted to the desired length by releasing or tightening the coupled state in the forward and reverse directions.

However, these conventional tube length adjusting devices have the following problems. That is, the groove locking type length adjusting device is somewhat difficult to adjust to the optimum length desired by the user when the gap between grooves is not dense and the length is increased when the force is applied to the tube because the fixed state is not firm. There is a problem that can be deformed, the length adjustment method by a separate fastening connection connector is uncomfortable to operate because it is necessary to re-tighten the connector after loosening the outside of the connector and adjust the length of the overlapping tube properly stretched will be.

Recently, to compensate for these shortcomings, a tube length adjusting device having a structure in which a rotatable connector is inserted into the tube body has been proposed, which is directly adjusted by loosening or tightening the inner and outer pipe bodies in mutually forward and reverse directions. On the other hand, in most cases, due to structural defects in the connection ports provided therein, the operation is not smooth, or it may be worn over a long period of time, and the clamping force is lowered. There was a problem that could be.

The present invention has been devised to solve the above problems, the purpose of which can be adjusted freely by the simple operation of rotating the inner and outer tube in the forward and reverse directions according to the user's height, The wedge-type fastening method that combines rotation is provided with a broom that can be adjusted in length so that the fixed state is very solid to increase the reliability of the product.

Length adjustable broom according to the present invention for achieving the above object, the inner tube formed with a predetermined diameter and length, the outer tube formed to a size that can accommodate the inner tube to maintain a suitable clearance gap; In the broom adjustable length broom comprising a fixing connector coupled to the overlapping portion of the inner and outer tube, the fastening or loosening them to be detachable to each other; The fixed connector is formed on the outer circumferential surface of the tapered spiral surface is gradually reduced in diameter toward the front end of the engaging frame is formed, the wedge member is fixed to the receiving end of the inner tube and the rear end of the enlarged diameter portion, Interposed between the wedge member and the outer tube in a locked state to enable free rotation, a cutout is formed along its longitudinal direction to be stretchable according to the diameter change of the wedge member, and a spiral coupled to the tapered spiral surface on an inner circumferential surface thereof. Surface is formed, characterized in that it comprises an elastic medium which rotates forward and backward with the rotation of the outer tube along the tapered spiral surface.

Here, the expansion medium is formed with a pressing projection on the outer circumferential surface along the longitudinal direction of the stretching medium so as to be in close contact with the inner circumferential surface of the outer tube, a plurality of the pressing projection at equal intervals along the radial direction It is preferred that it is formed.

1 is a combined perspective view of the adjustable broom according to the present invention.

Figure 2 is an exploded perspective view of a fixed connector applied to the adjustable broom according to the present invention.

3a and 3b is showing the locking and unlocking state of the fixed connector applied to the adjustable broom according to the present invention,

Figure 3a is locked by the expansion and contraction between the wedge member and the outer tube toward the enlarged portion of the wedge member fixed to the receiving end of the inner tube contained in the outer tube to be compressed (Locked). Is a cross-sectional view showing the state,

Figure 3b is unlocked by moving the expansion and contraction of the outer side toward the shaft diameter portion of the wedge member fixed to the receiving end of the inner tube accommodated in the outer tube to form a clearance gap between the wedge member and the outer tube. It is a cross-sectional view showing the unlocked state.

Figure 4 is an application state diagram showing an example of a state in which the adjustable broom according to the present invention coupled to any broom head.

<Description of Symbols for Major Parts of Drawings>

C; Fixed connector 1; Broom Head

2 ; Connection part 10; broom

11; Outer tube 11a; Closing cap

12; Inner tube 12a; End

12b; Receiving end 20; Wedge member

21; Tapered spiral surface 21a; Expansion part

21b; Shaft diameter part 22; Hang

30; Stretch media 31; Through hole

32; Incision 33; Incision

34; Crimping projection 35; Helix

Hereinafter, the length adjustable broom according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 and 2 and 4, showing the structure of the adjustable broom according to a preferred embodiment of the present invention, Figure 1 is a perspective view of the combination of the broom 10 according to the embodiment, Figure 2 is a broom 4 is an exploded perspective view of the fixed connector C applied to (10), Figure 4 shows an application state diagram showing an example of a state in which the broom 10 is coupled to any broom head (1).

The structure of the fixed connector (C) included in the broom 10 of the present invention shown in the figure is first revealed that it can be applied to any pipe assembly that requires length adjustment. However, in the description of the present invention, as shown in FIG. 4, in particular, with respect to the broom 10 coupled to the non-body portion 1, it is intended to present one embodiment of the structure suitable for this.

That is, the broom (10) has an end cap (11a) that can be hooked to one end of the outer tube (11), the inner tube 12 is coupled to the non-body portion (1) The coupling end portion 12a of the spiral is formed on its outer circumferential surface so that it can be fastened to a screw-type coupling hole formed in the connection portion 2 of the non-body portion (1).

The adjustable broom 10 according to the present invention is coupled to the overlapping portion of the inner and outer tube bodies 12 and 11 and the inner and outer tube bodies 12 and 11 so that they can be detached from each other. It is made of a structure including the fixing connector (C) for releasing or releasing.

The inner tube body 12 is formed to a predetermined diameter and length, the outer tube body 11 is formed of a diameter and a predetermined length to accommodate the inner tube body 12 to maintain a suitable clearance gap. .

In addition, the fixing connector (C) according to the present invention, and the wedge member (20) that is interference fit (Interference Fit) to the receiving end (12b) of the inner tube body 12 is inserted into the outer tube body (11) It is composed of a stretchable medium 30 interposed between the wedge member 20 and the outer tube body 11.

The wedge member 20 is formed with a hook frame 22 for attaching and detaching the stretchable medium 30 to the front end side of the body portion forming a tapered cylindrical shape, and on the outer peripheral surface of the body portion toward the hook frame 22. A tapered spiral surface 21 having a shaft diameter portion 21b which gradually decreases in diameter is formed, and the rear end portion of the enlarged diameter portion 21a is inserted into and fixed to the receiving end portion 12b of the inner tube body 11. Achieve.

The stretchable medium 30 is interposed between the wedge member 20 and the outer tube 11 in a state of being fixed to the catching frame 22 to enable free rotation, and the body of the stretchable medium 30. A spiral surface 35 corresponding to the tapered spiral surface 21 is formed on the secondary inner peripheral surface, and rotates forward and backward along with the rotation of the outer tube 11 along the tapered spiral surface 21. Reference numeral 31 shown in the figure is a through hole for engaging the engaging frame 22 of the wedge member 20.

In addition, the elastic medium 30 is formed with an incision 32 and an incision groove 33 along the longitudinal direction of the body portion to facilitate the elastic deformation according to the diameter change of the wedge member 20, On the outer circumferential surface of the body portion of the stretchable medium 30, a pressing protrusion 34 is formed along the longitudinal direction of the body portion such that the stretchable medium 30 may be in intimate contact with the inner circumferential surface of the outer tubular body 11. A plurality of 34 are formed at equal intervals along the radial direction.

By the structure of the broom 10 as described above, the subject innovation can not only adjust the length between the tubes 11, 12 very quickly and simply and smoothly, but also its fastening force can be maintained firmly, Referring to the operation principle of the fixing connector (C) in relation to this on the basis of the accompanying drawings as follows.

3A and 3B are combined cross-sectional views illustrating a locking and unlocking state of the fixed connector C applied to the broom 10 according to the embodiment, and FIG. 3A is housed in the outer tube 11. The outer and outer elastic medium 30 moves toward the enlarged diameter portion 21a of the wedge member 20 fixed to the receiving end 12b of the inner tube body 12 so that the wedge member 20 and the outer tube body 11 are moved. 3B is a state in which the expansion and contraction medium 30 moves toward the shaft diameter portion 21b of the wedge member 20 so as to provide a clearance between the wedge member 20 and the outer tube 11. Each of them shows the unlocked state.

First, in the case where the inner and outer tube bodies 12 and 11 are to be unlocked, and the length of the inner and outer tube bodies 12 and 11 is to be adjusted, the inner tube body is maintained until the user maintains the desired length. (12) is pushed or pulled out into the outer tube 11 to set a fixed position, and while holding this state, the outer tube 11 is held and the inner tube 12 is screwed in (inner tube body) It may be rotated in the case of a reference) or by holding the inner tube 12 and rotating the outer tube 11 in the screwing direction (when the outer tube is the reference). Alternatively, the inner and outer tube bodies 12 and 11 may be simultaneously rotated in a fastening direction relative to each other.

When locking the fixed connector (C) as described above, as shown in Figure 3a, the expansion and contraction medium 30 toward the enlarged portion 21a of the wedge member 20 with the rotation of the outer tube (11). By moving and gradually squeezing between the wedge member 20 and the outer tube 11 to maintain a firm fixed state between the inner and outer tube (12) (11).

On the other hand, on the contrary, when the locked inner and outer tubes 12 and 11 are to be unlocked, the inner and outer tubes 12 and 11 are held with both hands, respectively. Rotate in the screw loosening direction (when referring to the inner pipe) or rotate the outer pipe 11 in the screw loosening direction (when the reference to the outer pipe). ) Until each can move in the longitudinal direction. Alternatively, the inner and outer tube bodies 12 and 11 may be simultaneously rotated in a release direction relative to each other to release the locking.

At the time of unlocking the fixed connector C as described above, as shown in FIG. 3B, the expansion and contraction medium 30 rotates the outer tube 11 and the shaft diameter portion 21b of the wedge member 20. Moving to the side and gradually spaced apart so as to form a clearance gap between the expansion and contraction medium 30 and the outer tube 11, the state that can be moved in the longitudinal direction between the inner and outer tube (12) (11) Will be maintained.

As described above, the broom that can adjust the length of the present invention can freely adjust its length simply by rotating the inner and outer tubes in the forward and reverse directions according to the height of the user. Since the fastening method has the advantage that the fixed state is very solid and easy to operate.

The present invention has been described with reference to the embodiments shown in the accompanying drawings, which can be referred to as exemplary, and those skilled in the art can devise various modifications and equivalent embodiments therefrom. Such equivalent embodiments are also to be seen as included within the utility model registration claims of the present invention is quite natural. Therefore, the true scope of protection of the present invention should be determined only by the appended claims.

Claims (2)

An inner tube formed with a predetermined diameter and length, an outer tube formed in a size capable of accommodating the inner tube and maintaining an appropriate clearance gap, and coupled to an overlapping portion of the inner and outer tubes so as to be detachable from each other; In the adjustable length broom, which includes a release connector, The fixed connector is formed on the outer circumferential surface of the tapered spiral surface is gradually reduced in diameter toward the front end of the engaging frame is formed, the wedge member is fixed to the receiving end of the inner tube and the rear end of the enlarged diameter portion, Interposed between the wedge member and the outer tube in a locked state to enable free rotation, a cutout is formed along its longitudinal direction to be stretchable according to the diameter change of the wedge member, and a spiral coupled to the tapered spiral surface on an inner circumferential surface thereof. The broom is adjustable, characterized in that the surface is formed including an elastic medium that rotates forward and backward with the rotation of the outer tube along the tapered spiral surface. The method of claim 1, The expansion medium is formed with a pressing projection on the outer peripheral surface along the longitudinal direction of the expansion medium so as to be in close contact with the inner circumferential surface of the outer tube, a plurality of such compression projections are formed at equal intervals along the radial direction The adjustable broom which features.