CN211270509U

CN211270509U - Vacuum cleaner tube with two-layer structure

Info

Publication number: CN211270509U
Application number: CN201921594599.0U
Authority: CN
Inventors: 金钟国; 崔永涛; 河宗穆
Original assignee: Tianjin Silver Star Metal Co ltd
Current assignee: Tianjin Silver Star Metal Co ltd
Priority date: 2018-12-06
Filing date: 2019-09-24
Publication date: 2020-08-18
Anticipated expiration: 2029-09-24
Also published as: KR102093931B1

Abstract

The utility model relates to a main tube body for a vacuum cleaner with a two-layer structure, which is an extended main tube body forming an air passage towards the length direction; and a sub-pipe body extending in parallel with the main pipe body and being separated from the main pipe body by a partition plate as a boundary and capable of forming a passage through which an electric wire passes in a longitudinal direction, wherein an outer wall of the main pipe body except the partition plate and an outer wall of the sub-pipe body are formed as an outer surface while maintaining continuous connection in a cross section, and therefore, since the pipe body is formed in a two-layer structure, the electric wire can be connected while air is circulated between the cleaner body and the suction member by one pipe body, and therefore, improvement of ventilation performance or improvement of convenience in arrangement of the electric wire can be expected.

Description

Vacuum cleaner tube with two-layer structure

Technical Field

The present invention relates to a vacuum cleaner pipe body having a two-layer structure, and more particularly, to a vacuum cleaner pipe body having a two-layer structure in which a partition pipe having a two-layer structure in a cross section inside the pipe is used as a telescopic pipe of a vacuum cleaner, and air circulation and wire connection between a cleaner body and a suction member can be simultaneously performed by one pipe.

Background

In general, a vacuum cleaner is configured such that a main body having a power source and a suction member for sucking foreign substances to be cleaned are connected to each other through a flexible tube and a flexible hose. However, in recent years, with the improvement of the performance of vacuum cleaners, a driving unit such as a motor is mounted in a suction member, and it has been desired to improve cleaning efficiency by utilizing power of the driving unit.

Therefore, the telescopic tube is provided with a wire for connecting the power supply of the cleaner body to the driving part of the suction unit, and an example of the telescopic tube is a telescopic tube of a vacuum cleaner disclosed in korean laid-open patent No. 10-2012 and 0057830.

The extension pipe is composed of an inner pipe 110 and an outer pipe 120 movably attached to the inner pipe along the axis as shown by reference numeral 101 in fig. 1, and inner and outer insulating pipes 220,210 extending in the longitudinal direction are attached to the outer surface of the outer pipe 120 so as to house the electric wire 241 as described above.

Accordingly, in the conventional extension pipe 101, the outer insulating pipe 220 leaks outside the outer pipe 120 in the folded state, and the inner insulating pipe 210 also leaks outside the inner pipe 110 in the unfolded state, which causes a problem that the appearance of the extension pipe 101 is entirely deteriorated.

Further, in the expanded state, the inner insulating tube 210 is inevitably required to protect the electric wire 241 located outside the inner tube 110, and the outer insulating tube 220 is required to be arranged only outside the outer tube 120 as described above to protect the entire electric wire 241, so that the outer structure of the tube 101 is complicated by the inner and outer

insulating tubes

210 and 220, and therefore, there is a problem that maintenance is difficult, such as a failure or a possibility of damage becomes high.

Disclosure of Invention

The present invention has been made to solve the above-mentioned problems of the conventional extension tube, and an object of the present invention is to provide a tube body for connecting a vacuum cleaner body and a suction member, in which a tube body for forming an air passage and a tube body for passing an electric wire are provided as a two-layer tube body in which one tube body can be integrated, thereby making the appearance of the tube body for connecting the vacuum cleaner body and the suction member more beautiful.

In addition, another object of the present invention is to provide a telescopic tube which can protect or support an electric wire more stably and improve sealing performance with an outer tube by an outer tube assembled to the tube and a support tube assembled to the tube when the tube is used as the telescopic tube.

Another object of the present invention is to provide a vacuum cleaner which can reduce a malfunction or damage of a telescopic tube by smoothly guiding an outer tube moving along a tube body by the tube body when the outer tube is assembled outside the tube body to manufacture the telescopic tube, thereby improving a movement functionality of the telescopic tube with respect to a telescopic operation, and thus maintaining and managing the vacuum cleaner more efficiently.

The invention for achieving the purpose is to provide a main pipe body which is formed by extending an air passage towards the length direction; and a sub-pipe body extending in parallel with the main pipe body and separated from the main pipe body by a partition plate as a boundary so as to form a passage for passing an electric wire in a longitudinal direction, wherein an outer wall of the main pipe body except the partition plate and an outer wall of the sub-pipe body are continuously connected in a cross section to form an outer surface of the main pipe body and the sub-pipe body.

In addition, it is preferred that the primary and secondary tubes be unitary with an oval cross-section.

Further, it is preferable that the inner tube and the sandwiched outer tube slidably movable on the outer surface form a folding type telescopic tube.

Additionally, comprising; the guide rail is preferably a guide rail which extends in the longitudinal direction along the outer wall of the sub pipe body, and which is recessed to form an escape groove and protrudes outward in the radial direction from the outer wall, thereby guiding the sliding movement of the outer pipe.

Additionally, comprising; follow the auxiliary pipe body the outer wall is to length direction extension, and follow the outer wall is to the inboard protrusion of radial direction to the trench of dodging that the formation that can be sunken dodged the groove is optimum.

According to the two-layer structure vacuum cleaner pipe body of the present invention, since the pipe body connecting between the vacuum cleaner main body and the suction member is formed of the two-layer structure, it is possible to connect the electric wires while circulating air between the cleaner main body and the suction member by one pipe body, and to divide the air passage and the electric wire passage by the partition plate, and it is possible to expect improvement in ventilation performance and improvement in convenience in arrangement of the electric wires.

Further, since the air passage and the electric wire passage are formed in two layers inside one tube, the overall shape of the tube can be reduced, and the outer tube can be manufactured beautifully.

In addition, the tube body and the outer tube are connected in a folding telescopic manner, the support tube is arranged in the tube body, and the front end of the support tube is connected with the outer tube, so that the electric wire can be stably supported through the support tube, and the sealing performance between the outer tube and the tube body can be improved.

In addition, the outer tube, which moves forward and backward along the outside of the tube body for the folding action of the telescopic tube, is guided by the guide rail protruding from the outside of the tube body or the tube body, so that the movement functionality accompanying the movement of the outer tube can be improved, thereby reducing the malfunction or damage of the telescopic tube and further efficiently maintaining and managing the cleaner.

Drawings

Fig. 1 is a front sectional view showing an extension pipe of a conventional cleaner.

Fig. 2 is a schematic view showing a tube for a vacuum cleaner having a two-layer structure according to an embodiment of the present invention.

Fig. 3 is a side view of fig. 2.

Figure 4 is a schematic view showing a vacuum cleaner telescopic tube in a deployed position to which the tube body of figure 2 will be applied.

Figure 5 is a front view in longitudinal section showing the telescopic tube of figure 4 in a folded position.

Fig. 6 is a partially enlarged view of fig. 5.

Fig. 7 is an exploded view showing the outer tube of fig. 5 as a center.

Fig. 8 is an exploded view showing the pipe body of fig. 5 as a center.

Fig. 9 is a schematic cross-sectional view of line AA of fig. 5.

Figure 10 is an enlarged front elevation view, partly in longitudinal section, showing the telescopic tube of figure 5 in the extended position.

Fig. 11 is a schematic view showing a tube for a vacuum cleaner having a two-layer structure according to another embodiment of the present invention.

Fig. 12 is a side view of fig. 11.

Figure 13 is a schematic view showing a vacuum cleaner extension tube in a deployed position to which the tube body of figure 11 would be applied.

Figure 14 is a front elevation view in longitudinal section showing the telescopic tube of figure 13 in a folded position.

Fig. 15 is an exploded view showing the outer tube of fig. 14 as a center.

Fig. 16 is an exploded view of the tube of fig. 14.

Fig. 17 is a schematic cross-sectional view of line AA of fig. 14.

Detailed Description

Hereinafter, a two-layered structure of a vacuum cleaner pipe according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The tube body of the present invention is a tube body for connecting a main body of a vacuum cleaner and a suction member such as a vacuum brush head, and has a two-layer structure formed by a main tube body 3 and a sub tube body 5 as shown by reference numeral 1 in fig. 2 and 3, and thus, as shown in fig. 4, an inner tube and an outer tube 10 together constitute a telescopic tube 100.

Here, the main tube 3 is a portion forming an air passage between the main body and the suction member, and as shown in fig. 2 and 3, is formed as a hollow circular cross-sectional cylindrical body elongated in the longitudinal direction.

The sub-tube 5 is a portion where a wire passage through which the wire 21 passes is formed between the main body and the suction member, and as shown in fig. 2 and 3, the sub-tube extends in the longitudinal direction along the main tube 3, is divided from the main tube 3 with the partition plate 7 as a boundary to form the wire passage, and is formed into a hollow cylindrical body having a crescent-like cross section. The secondary pipe body 5 is thus formed integrally with the primary pipe body 3 with an oval cross section. Thus, the pipe body 1 is integrally formed with the outer surface 15 while maintaining continuity in cross section by smoothly connecting the outer wall 11 of the primary pipe body 3 and the outer wall 13 of the secondary pipe body 5.

As described above, the tubular body 1 having the two-layer structure is a telescopic tube 100 which is foldable as one body together with the outer tube 10 as shown in fig. 4 to 6. At this time, since the outer tube 100 is sandwiched by the tube body 1 so as to be slidable, the extension tube 100 can be folded or unfolded depending on the use state.

As shown in fig. 5 and 6, in the folded position in which the outer tube 10 is sandwiched at its maximum, the front end of the tube body 1 is positioned more rearward than the outer tube 10 by the distance d, and the rear end thereof is also positioned more rearward than the rear end of the outer tube. Thus, the electric wire 21 inserted into the sub-tube 5 is fixed to the distal end of the outer tube 10, and the extendable and retractable portion 25 is formed in the space S corresponding to the distance d.

Meanwhile, the tube body 1 is, as shown in fig. 5 to 7, such that it can support the upper telescopic tube 25, including the support tube 17. The support tube 17 is disposed so that the rear end thereof is relatively movable along the inner peripheral surface of the main tube 3, and the front end thereof is fixed to the front end side of the outer tube 10, so that the outer peripheral surface thereof supports the extended/contracted portion 25 of the electric wire 21 disposed in the space S. The rear end of the pipe body is inserted and coupled with a seal 27, the front end of the seal 27 is sandwiched between the inner circumferential surfaces of the rear ends of the support pipes 17, and the rear end is tightly coupled with the inner circumferential surface of the pipe body 1 to seal a gap between the inner circumferential surface of the pipe body 1 and the outer circumferential surface of the support pipes 17.

As shown in fig. 2 to 4 and 8, the pipe body 1 has a plurality of escape grooves 20 formed on the outer wall 13 of the sub-pipe 5 so as to be recessed at regular intervals in the longitudinal direction, so that the outer pipe 10 can be temporarily held at a desired position by the locking member 50. However, the sub-pipe 5 has a guide rail 19 protruding radially outward from the outer wall 13 to secure the depth of the escape groove 20, and the guide rail 19 is formed to be long in the longitudinal direction on the sub-pipe 5 to guide the sliding movement of the outer pipe 10 by the locking member 50.

A tubular body according to another embodiment of the present invention is shown in figure 11 with reference numeral 301. As shown in fig. 11 and 12, the tube 301 has a two-layer structure including the main tube 3 and the sub-tube 5, as in the embodiment of fig. 2, and as shown in fig. 13, forms the extension tube 300 together with the outer tube 10 as the inner tube.

Here, the main pipe 3 and the sub pipe 5 have the same configuration as the main pipe 3 and the sub pipe 5 of fig. 2 in most parts, and therefore, the description of the same configuration will not be repeated here.

However, as shown in fig. 13 to 17, the escape grooves 20 are formed on the outer wall 13 of the sub-pipe 5 so as to be recessed at a predetermined interval in the longitudinal direction, so that the pipe body 301 is temporarily held at a desired position by the locking member 50 with respect to the outer pipe 10. However, the sub-pipe 5 is formed to protrude radially inward from the outer wall 13 to form a recess groove seat 319, so that the depth of the recess groove 20 can be ensured. The escape groove base 319 is extended in the longitudinal direction on the ceiling of the sub pipe body 5, so that the thickness of the outer wall 13 of the sub pipe body 5 can be secured to be able to process the escape groove 20. However, since the escape slot 319 is not exposed from the outer tube of the tube body 301, the tube body 301 is more beautiful in appearance, and the outer shapes of the tube body 301 and the outer tube 10 are similar in appearance, thereby enabling a closer formation match.

Now, the operation of the tube 1 for a vacuum cleaner having a two-layer structure according to an exemplary embodiment of the present invention will be described as follows.

When the telescopic tube 100 to which the tube body 1 of the present invention is applied is stored, as shown in fig. 5 and 6, the tube body 1 and the outer tube 10 are in the folded position, and the outer tube 3 cannot be retreated any more in the folded position, and is fixed to the tube body 1 by the locking assembly 50.

In this state, when the locking assembly 50 is pushed forward, as shown in fig. 9, the button cover 53 is first advanced, and the button bracket 51 is moved along the button rail 19 together with the locking assembly 50 while the lock 55 is sunk into the escape slot 20, and as shown in fig. 10, the telescopic tube 1 reaches the maximum length capable of being fixed while the locking assembly 50 is padlocked into the escape slot 20 located at the forefront. At this time, although the distal end of the extensible part 25 is hooked on the distal end of the outer tube 10, the extensible part 25 extends long, and thus the electric wire 21 can cope with the movement of the outer tube 10. Meanwhile, the support pipe 17 is a support expansion part 25 whose front end is hung on the rear end of the connection pipe 22, and thus, as described above, advances together when the outer pipe 3 advances, and thus, as shown in fig. 6, does not hang down.

In this way, when the vacuum cleaner is started in the extended state, the vacuum negative pressure on the main body side strongly sucks the external air together with foreign substances such as dust from the suction member. At this time, the sucked air is not only separated from the air passage by the support pipe 17 but also sealed between the support pipe 17 and the main pipe body 3 by the sealing member 27, and the support pipe 17 further not only enables the electric wire passage of the sub pipe body 5 to be isolated from the air passage but also seals the main pipe body 3, that is, between the pipe body 1 and the outer pipe 10.

Meanwhile, when the telescopic tube 100 is stored or the extended length of the telescopic tube 100 is shortened after use, the locking assembly 50 is pressed to travel backward together with the outer tube 10, and the padlock is locked to the escape groove 20 at the rear side to fix the outer tube 3 to the tube body 1.

In addition, when the pipe body 301 is pushed forward by pressing the button cover 353 of the locking unit 50 shown in fig. 17 in the assembled state with the outer pipe 10 as shown in fig. 14, the locking clamp 351 moves along the outer surface 13 of the pipe body 301 together with the locking unit 50 as the locking lock 355 sinks into the escape groove 20 as the locking slider 357 advances, and the telescopic pipe 300 reaches the maximum length that can be fixed as the locking unit 50 padlocks into the escape groove 20 located at the forefront as shown in fig. 10.

1, 301, a pipe body 3, a main pipe body

5: auxiliary pipe body 7: partition plate

10

outer tube

11, 13 outer wall

15: outer surface 17: support tube

19 guide rail 20 escape groove

21, electric wire 25, telescopic part

27: seal 50: locking assembly

100, 300, telescopic pipe.

Claims

1. A tube body for a vacuum cleaner having a two-layer structure, characterized by comprising an extended main tube body forming an air passage in a longitudinal direction; and a sub-pipe body which is separated from the main pipe body by using the dividing plate as a boundary, can form a passage for passing the electric wire in the length direction, and is extended in parallel with the main pipe body; wherein, the outer wall of the main pipe body except the partition plate and the outer wall of the secondary pipe body are continuously connected along the cross section to form the outer surface.

2. The two-layer vacuum cleaner tube according to claim 1, wherein the primary tube and the secondary tube have an oval cross-section integrally.

3. The two-layer structure vacuum cleaner tube according to claim 1, wherein the inner tube is formed as a collapsible telescopic tube together with the sandwiched outer tube slidably movable on the outer surface.

4. A two-layer vacuum cleaner tube according to claim 3, comprising; and a guide rail extending in a longitudinal direction along the outer wall of the sub pipe body, and protruding outward in a radial direction from the outer wall in a recessed form to form an escape groove, thereby guiding the sliding movement of the outer pipe.

5. A two-layer vacuum cleaner tube according to claim 3, comprising; the auxiliary pipe body is formed by a pair of auxiliary pipe bodies, wherein the auxiliary pipe bodies are arranged on the outer wall of each auxiliary pipe body, and the auxiliary pipe bodies extend to the length direction and protrude inwards from the outer wall in the radius direction, so that the auxiliary pipe bodies can be sunken to form an avoiding groove position of the avoiding groove.