KR20210074843A - suction pipe length adjusting device of cordless vacuum cleaner - Google Patents

Abstract

The disclosed contents relate to a suction pipe length adjusting device for a cordless vacuum cleaner capable of adjusting expansion and contraction of a length of a suction pipe for sucking a foreign substance depending on a physical shape of a user. The suction pipe length adjusting device for a cordless vacuum cleaner according to an embodiment of the present specification comprises: an inner pipe; an outer pipe; a first connection unit and a second connection unit; a stopper; a housing; a guider; and a cap. The inner pipe separately forms a storage space unit and a first passage in a longitudinal direction inside, forms mounting grooves at equal intervals on an outer surface, and opens both ends. The outer pipe forms a second passage combined to slide the inner pipe in the longitudinal direction, allows a cutting unit to be formed through one side, and opens both ends. The first connection unit is combined with an inner end of the inner pipe to prevent separation of the inner pipe from the outer pipe. The second connection unit is formed between an outer surface of the inner pipe and an inner surface of the outer pipe, and forms a penetrating hole on the same line as the cutting unit. The stopper is combined to the penetrating hole with the cutting unit, mounts a lower end in the mounting groove, and fixes the inner pipe slid in the outer pipe to an arbitrary position. The housing is slid to an axis direction on the outer surface of the outer pipe, and includes a pressing protrusion and an accommodation groove. The pressing protrusion presses an upper end of the stopper mounted in the mounting groove. The accommodation groove is formed in left and right sides of the pressing protrusion, and accommodates the upper end of the stopper separated from the pressing protrusion. The guider is formed between the housing and the second connection unit, and supports the stopper when the stopper is separated and mounted from the mounting groove. The cap is mounted on an upper surface of the housing, and shifts the housing to a left or right direction.

Description

Suction pipe length adjusting device of cordless vacuum cleaner

The present specification relates to a suction pipe for a cordless vacuum cleaner, and more specifically, to a suction pipe length adjusting device for a cordless vacuum cleaner for stretching and contracting a length of a suction pipe through which foreign substances are sucked according to a user's physical body type.

Unless otherwise indicated herein, the material described in this section is not prior art to the claims of this application, and inclusion in this section is not an admission that it is prior art.

In the case of cordless vacuum cleaners, which are widely used in consideration of the inconvenience caused by exposure of long power cables while cleaning using a wired cleaner, use an integrated cordless vacuum cleaner in which the suction motor and the battery are integrated at the rear end of the suction tube. Alternatively, a wireless cleaner equipped with a docking station to which the main body is coupled while having a charging means for charging by supplying external commercial power to a battery inside the main body is used.

In particular, in order to adjust the length of the suction tube according to the user's body type, the wireless vacuum cleaner restricts or releases the movement of pipes having different diameters by using a locking means to adjust the length in a one-touch manner. The above-described locking means binds or releases each pipe as the stopper is bound or released, so that the length can be stretched and contracted.

A device for adjusting the length of the handle of a vacuum cleaner is posted in the Republic of Korea Registered Utility Model Publication No. 20-0343675.

An embodiment of the present specification relates to a suction pipe length adjusting device for a cordless vacuum cleaner that allows the length of the suction pipe through which foreign substances are sucked to be easily and quickly stretched and adjusted according to the user's physical body type.

An embodiment of the present specification relates to a suction pipe length adjusting device for a cordless vacuum cleaner, which allows the suction pipe length adjusting device to be assembled without using parts such as screws to reduce cost and improve workability.

According to an embodiment of the present specification to achieve the above and other purposes of the present specification,

an inner tube in which the receiving space and the first passage are formed separately in the longitudinal direction, seating grooves are formed at equal intervals on the outer surface, and both ends are open;

an outer tube in which a second passage to which the inner tube is slidably coupled is formed in the longitudinal direction, a cutout is formed on one side, and both ends are open;

In order to prevent the inner tube from being separated from the outer tube, a first connector coupled to the inner end of the inner tube is formed between the outer surface of the inner tube and the inner surface of the outer tube, and a through hole is formed on the same line as the cutout. becoming a second connector;

a stopper coupled to the cutout and the through hole, the lower end of which is seated in the seating groove, and a stopper for fixing the inner tube slidingly moved to the outer tube at an arbitrary position;

It is axially slidably mounted on the outer surface of the outer tube and includes a pressing protrusion for pressing the upper end of the stopper seated in the seating groove, and an upper end of the stopper formed on the left and right sides of the pressing protrusion to receive the upper end of the stopper separated from the presser a housing comprising a groove;

a guider formed between the housing and the second connector and supporting the stopper when the stopper is detached and seated from the seating groove;

It provides a suction pipe length adjusting device for a cordless vacuum cleaner, characterized in that it is mounted on the upper surface of the housing, the cap for shifting the housing in the left or right direction;

The suction pipe length adjusting device for a cordless vacuum cleaner according to an embodiment of the present specification having the above-described configuration has the following advantages.

The length of the suction pipe through which foreign substances are sucked can be easily and quickly stretched and adjusted according to the user's physical body shape, so that it can be used conveniently and thus has reliability.

In addition, since the suction pipe length adjusting device is assembled in a concave-convex coupling type without using parts such as screws, it is possible to reduce cost and improve workability.

1 is a schematic view of a suction pipe length adjusting device for a cordless vacuum cleaner according to a preferred embodiment of the present specification;
Figure 2 is an exploded perspective view of the length adjusting device shown in Figure 1,
3 is a cross-sectional view of the length adjusting device shown in FIG. 1;
4 is a longitudinal sectional view of the length adjusting device shown in FIG. 1;
5 and 6 are views showing expansion and contraction of the suction pipe length by the length adjusting device shown in FIG. 1;
FIG. 7 is a modified example of a stopper in the length adjusting device shown in FIG. 1 .

Hereinafter, a suction pipe length adjusting device for a cordless vacuum cleaner according to a preferred embodiment of the present specification will be described in detail with reference to the accompanying drawings.

1 to 7 , the suction pipe length adjusting device for a cordless vacuum cleaner according to an embodiment of the present specification (as an example, may be applied to a length adjusting device for stretching and contracting the suction pipe length of a cordless vacuum cleaner)

The receiving space portion 10 and the first passage 11 in which the power cable (not shown) are accommodated are formed separately in the longitudinal direction, and the seating grooves 12 are formed at equal intervals on the outer surface, and both ends This open elliptical inner tube 13 (a hollow pipe);

A second passage 14 to which the inner tube 13 is slidably coupled is formed in the longitudinal direction, a cutout 15 is formed through one side, and an outer tube 16 of an oval shape with both ends open ( hollow pipe);

In order to prevent the inner tube 13 from being separated from the outer tube 16 , the first connector 17 coupled to the inner end of the inner tube 13 and the outer surface of the inner tube 13 and the inner surface of the outer tube 16 a second connector 19 formed therebetween and having a through hole 18 formed on the same line as the cutout 15;

A stopper 20 for fixing the inner tube 13, which is coupled to the cutout 15 and the through hole 18, the lower end is seated in the seating groove 12, and slides with respect to the outer tube 16, at an arbitrary position. ) (stopper) (used to limit the sliding movement of the inner tube 13 relative to the outer tube 16);

It is installed on the outer surface of the outer tube 16 by elastic members 34 and 35 (as an example, a compression coil spring may be used) so as to be slidably movable in the left or right direction, and is seated in the seating groove 12 . A pair of accommodating grooves 22 for accommodating the upper end of the stopper 20 that is formed on the left and right sides of the pressing protrusion 21 to press the upper end of the stopper 20 to be used, and the stopper 20 separated from the pressing protrusion 21 a housing 24 comprising , 23 ;

a guider 25 formed between the housing 24 and the second connector 19 and supported when the stopper 20 is detached and seated from the seating groove 12;

and a cap 26 mounted on the upper surface of the housing 24 and configured to shift the housing 24 in a left or right direction.

According to a more preferred embodiment, it is formed opposite to the lower inner periphery of the outer tube 16, and when sliding the inner tube 13 with respect to the outer tube 16, the outer surface of the first connector 17 It is characterized in that it further comprises a; guide rail (28) for guiding the protrusion (27) that is formed in the sliding movement, and prevents the inner tube (13) from rotating with respect to the outer tube (16).

The aforementioned stopper 20 is

By cutting the lower side of the stopper 20, the groove 29 is formed opposite to the cut surface that is divided, and an elastic member 36 connecting the upper part 30 and the lower bracket 31 mounted in the groove 29 (one) As an example, a tension coil spring may be used); as it further includes, a stopper 20 with respect to the seating groove 12 when the length is adjusted by sliding and moving the inner tube 13 with respect to the outer tube 16 . It is characterized in that it can be smoothly separated and seated.

The coupling groove 32 and the coupling groove 32 formed through one or more on one side of the inner end of the above-described inner tube 13, the first connector 17 to correspond to the separation prevention hole 33 formed on the inner periphery; As it further includes, when coupling the release prevention tool 33 to the coupling groove 32, the inner tube 13 by the second connector 19 can be prevented from being separated from the outer tube 16. characterized in that

Hereinafter, an example of use of the suction pipe length adjusting device for a cordless vacuum cleaner according to an embodiment of the present specification will be described with reference to the accompanying drawings.

As shown in FIGS. 1 to 7 , the brackets 17a extending on both front and rear sides of the aforementioned first connector 17 are fitted into the cutouts 19a formed in the second connector 19 corresponding to this. That is, the upper portion of the first connector 17 is in close contact with one end of the second connector 19 , and the brackets 17a on both sides of the front and rear are inserted into the cutout 19a of the second connector 19 and are integrally connected. .

Accordingly, the first and second connectors 17 and 19 divided into two parts form an integrated connector.

The inner end of the above-described inner tube 13 passes through the second connector 19 to be in close contact with one end of the first connector 17 .

At this time, the separation prevention hole 33 formed on the inner surface of the first connector 17 is fitted into the coupling groove 32 formed through the inner tube 13 to correspond thereto. In addition, the outer end of the pipe-shaped first passage 11 formed in the inner tube 13 is wrapped around and supported by the clasp (not shown) of the first connector 17 .

After passing one end of the above-described outer tube 16 through the first connector 17, the second connector 19 is moved to the engaging projection 19b formed on the outer periphery and coupled thereto. At this time, when one end of the outer tube 16 passes through one side of the second connector 19 that is in close contact with the end of the first connector 17, the first elastic piece 37 is elastically deformed by the incision groove 37a and bent inward. Therefore, it passes through the locking jaw of the first elastic piece (37).

In addition, when one end of the outer tube 16 passing through the first elastic piece 37 is moved to the locking jaw 19b of the second connector 19, the second elastic piece 38 is cut by the cutout groove 38a. Since it is elastically deformed and bent inward, it passes through the locking jaw of the second elastic piece 38 .

That is, when one end of the aforementioned outer tube 16 is moved to the engaging projection 19b of the second connector 19 , one end of the cutout 15 of the outer tube 16 is caught by the second elastic piece 38 . It is caught in the jaw (not marked with reference numerals).

Accordingly, it is possible to prevent the outer tube 16 from being separated from the second connector 19 .

As described above, the first and second connectors 17 and 19 are integrally connected, the inner end of the inner tube 13 is coupled to the first connector 17 , and the outer tube 16 is connected to the second connector 19 ), since the first connector 17 connected to the inner end of the inner tube 13 is interfered with by the second connector 19 fixed to the inner periphery of the outer tube 16 at one end, the inner tube 13 It becomes possible to prevent separation from the outer tube 16 .

The guider 25 for supporting the stopper 20 is seated on the upper portion of the cutout 15 of the outer tube 16 coupled to the second connector 19 described above in the form of a double tube. At this time, one end of the guider 25 is caught by the clasp (not shown) of the first elastic piece 37 formed in the second connector 19, and is covered by the outer tube 16 and compressed.

Accordingly, the guider 25 can be prevented from being separated from the second connector 19 .

A through hole 18 formed in the second connector 19 between the first and second elastic pieces 37 and 38 described above, a cutout 15 formed in the outer tube 16 in the same line therewith, and a guider ( 25) The centers of the stopper receiving grooves 25a formed in the center coincide with each other.

That is, the stopper 20 accommodated in the receiving groove 25a of the guider 25 and coupled to the cutout 15 and the through hole 18 is a seating groove formed at equal intervals on the outer periphery of the inner tube 13 ( 12, 12a, 12b).

The pressing protrusion 21 supporting the upper end of the stopper 20 seated in the seating groove 12 of the inner tube 13 described above, and the pressing protrusion 21 are formed symmetrically on the left and right sides, so that the stopper 20 is seated. Receiving grooves 22 and 23 for accommodating the top end of the stopper 20 when separated from the groove 12 and the pressing protrusion 21, and the locking jaw 24c of the housing 24 in which the elastic members 34 and 35 are installed. Correspondingly, it is fixed so as not to be separated from the coupling groove 25d formed in the guider 25 .

As shown in FIGS. 3 and 5 , the length of the suction pipe can be easily adjusted according to the physical body type of the user who uses the cordless vacuum cleaner.

In particular, when the reduction and adjustment of the length of the suction pipe (A) is described in detail, when the user presses the cap 26 or the housing 24 in the left direction in the drawing of FIG. 5 , it is separated from the pressing protrusion 21 . The upper end of the stopper 20 to be used is seated in the receiving groove 23 of the housing 24 .

At this time, the elastic member 35 installed between the protrusion 25b of the guider 25 and the protrusion 24a of the housing 24 receives a compressive force. On the other hand, the elastic member 34 installed between the protrusion 25c of the guider 25 and the protrusion 24b of the housing 24 does not apply a compressive force to maintain the initial elastic force.

As described above, when the user presses the cap 26 or the housing 24 in the left direction in the drawing, gripping the inner tube 13 and pushing or pulling toward the outer tube 16 (FIG. 5) In the drawing, referring to moving in the right direction), the lower end of the stopper 20 separated from the seating groove 12 formed on the outer periphery of the inner tube 13 is moved to the outer periphery of the inner tube 13 .

Therefore, when the user slides the inner tube 13 into the outer tube 16 by an arbitrary length (at this time, the protrusion 27 formed on the bottom surface of the first connector 17 corresponds to the outer tube 16 ). ) sliding along the guide rail 28 formed on the inner periphery) The stopper 20 is seated in the seating groove 12a formed on the outer periphery of the inner tube 13 . That is, it is possible to reduce the length of the suction pipe (A) by an arbitrary length.

At this time, when the external force pressing the cap 26 or the housing 24 is removed, the housing 24 on which the cap 26 is mounted is returned to the initial position shown in FIG. 3 by the elastic restoring force of the elastic member 35 . Since it returns (the forces of the left and right elastic members 34 and 35 are balanced with each other), the upper end of the stopper 20 is supported by the pressing protrusion 21 .

Therefore, since the movement of the inner tube 13 with respect to the outer tube 16 is limited, the suction tube (A) maintains the current state in which the length is reduced and adjusted.

At this time, the upper and lower ends of the stopper 20, the seating grooves 12 of the inner tube 13 in which the stopper 20 is seated and separated, and the receiving grooves 22 and 23 of the housing 24 are the stoppers ( 20) is formed in a trapezoidal shape so as to smoothly slide and move, and the entrance side of the seating groove 12 and the receiving grooves 22 and 23 is preferably formed to form a curved surface.

As shown in FIGS. 3 and 6 , the length of the suction pipe can be easily stretched and deformed according to the physical body type of the user who uses the cordless vacuum cleaner.

In particular, if the enlarged adjustment of the length of the suction pipe (A) is described in detail, when the user presses the cap 26 or the housing 24 in the right direction in the drawing of FIG. 6 , it is separated from the pressing protrusion 21 . The upper end of the stopper 20 to be used is seated in the receiving groove 22 of the housing 24 .

At this time, the elastic member 34 installed between the protrusion 25c of the guider 25 and the protrusion 24b of the housing 24 receives a compressive force. On the other hand, the elastic member 35 installed between the protrusion 25b of the guider 25 and the protrusion 24a of the housing 24 does not apply a compressive force, so that the initial elastic force can be maintained.

As described above, when the user grips the inner tube 13 and pulls it from the outer tube 16 while pressing the cap 26 or the housing 24 in the right direction in the drawing (in the drawing in FIG. 6 ) , refers to moving in the left direction), the lower end of the stopper 20 separated from the seating groove 12 of the inner tube 13 and positioned on the outer periphery of the inner tube 13 is on the outer periphery of the inner tube 13 It is seated in the formed seating groove (12b).

Therefore, when the user slides the inner tube 13 outward from the outer tube 16 by an arbitrary length (at this time, the protrusion 27 formed on the bottom surface of the first connector 17 corresponds to the outer tube ( 16) It slides along the guide rail 28 formed on the inner periphery) The stopper 20 is seated in the seating groove 12b formed on the outer periphery of the inner tube 13. That is, the length of the suction pipe (A) can be extended by an arbitrary length (FIG. 3 shows the state in which the length of the suction pipe (A) is maximally extended).

At this time, when the external force pressing the cap 26 or the housing 24 is removed, the housing 24 on which the cap 26 is mounted is returned to the initial position shown in FIG. 3 by the elastic restoring force of the elastic member 34 . Since it returns (the forces of the left and right elastic members 34 and 35 are balanced with each other), the upper end of the stopper 20 is supported by the pressing protrusion 21 .

Therefore, since the movement of the inner tube 13 with respect to the outer tube 16 is restricted, the suction tube (A) maintains the current state of which the length is enlarged and adjusted.

Although not shown in the drawings, power such as a battery mounted on the upper end of the suction pipe (A) for a wireless vacuum cleaner having a handle (not shown) formed at the top is received in the storage space portion 10 of the inner tube 13 . The technical content applied to known components such as a suction head, a mini motor head, and a carpet cleaning head detached from the lower end of the suction pipe (A) by a cable is commonly used in the technical field to which this specification belongs. Detailed description will be omitted.

Here, although the foregoing specification has been described with reference to preferred embodiments, those skilled in the art can variously modify and modify the present specification without departing from the spirit and scope of the present specification as set forth in the following claims. You will understand that you can change it.

10; storage space
11; 1st passage
12; seating home
13; inner tube
14; second passage
15; incision
16; outer tube
17; 1st connector
18; through hole
19; 2nd connector
20; stopper
21; pusher
22,23; accommodation home
24; housing
25; guider
26; cap
27; projection part
28; guide rail
29; groove
30; upper bracket
31; lower bracket
32; mating groove
33; escape prevention zone
34,35,36; elastic member
37; 1st elastic piece
38; 2nd elastic piece

Claims (4)

an inner tube in which the receiving space and the first passage are formed separately in the longitudinal direction, seating grooves are formed at equal intervals on the outer surface, and both ends are open;
an outer tube in which a second passage to which the inner tube is slidably coupled is formed in the longitudinal direction, a cutout is formed on one side, and both ends are open;
In order to prevent the inner tube from being separated from the outer tube, a first connector coupled to the inner end of the inner tube and a through hole formed between the outer surface of the inner tube and the inner surface of the outer tube and on the same line as the cutout are formed becoming a second connector;
a stopper coupled to the cutout and the through hole, the lower end of which is seated in the seating groove, and a stopper for fixing the inner tube slidingly moved to the outer tube at an arbitrary position;
It is mounted axially on the outer surface of the outer tube slidably in the axial direction and includes a pressing protrusion that presses the upper end of the stopper seated in the seating groove, and an upper end of the stopper formed on the left and right sides of the pressing protrusion to receive the upper end of the stopper separated from the pressing protrusion a housing comprising a groove;
a guider formed between the housing and the second connector and supporting the stopper when the stopper is detached and seated from the seating groove;
and a cap mounted on the upper surface of the housing and configured to shift the housing in a left or right direction. According to claim 1,
It is formed to be opposite to the lower portion of the inner periphery of the outer tube, and guides a protrusion formed on the outer surface of the first connector when sliding the inner tube with respect to the outer tube, and the inner tube with respect to the outer tube Suction pipe length adjusting device for a cordless vacuum cleaner, characterized in that it further comprises a guide rail for preventing rotation. According to claim 1,
the stopper
By cutting the lower side of the stopper, the groove is formed opposite to the cut surface formed by division, and an elastic member connecting the upper and lower brackets mounted in the groove is further provided, so that the inner tube is slidingly moved with respect to the outer tube. The suction pipe length adjusting device for a cordless vacuum cleaner, characterized in that it allows the stopper to be smoothly detached and seated in the seating groove. According to claim 1,
As it further includes; one or more coupling grooves formed on one side of the inner end of the inner tube, and a release prevention tool formed on the inner periphery of the first connector to correspond to the coupling groove, the separation prevention tool is provided in the coupling groove When coupled, the suction pipe length adjusting device for a cordless vacuum cleaner, characterized in that to prevent the inner tube from being separated from the outer tube by the second connector.

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