JPH01195828A - Suction port body of vacuum cleaner - Google Patents

Abstract

PURPOSE:To facilitate assembly work by constituting a connection tube and a joint tube not to come off each other, which both tubes engaging with each other by the engagement of an engagement projection of a covering body attached to the joint tube freely slidably with an engagement groove formed on the connection tube to be capable of circumferentially rotating relative to each other. CONSTITUTION:A connection tube 31 is connected freely vertically rotatably to communicate with the rear part of a suction body 21 provided with an electric load 27 as well as a duct suction port 24 at a bottom surface portion thereof. A cover body 51 for holding electric lead for supplying power to the electric load 27 is attached to the outer circumferential portion of a bend-formed joint tube 41 fitted freely rotatably in the circumferential direction on the outer circumferential direction of an on the circumference of the connection tube 31. An engagement groove 35 is provided on the circumference of and in the circumferential direction of the tube 31. A through hole 44 to be overlapped by the engagement groove 35 is formed in the joint tube 41. A detent projection 54 is formed on the cover body 51 to be engaged, through the through hole 44, with the engagement groove 35 freely slidaby to prevent the connection tube 31 and the joint tube 41 from coming off each other, with the projection located at a position which is on the upper side when the joint tube is directed upward. As a result, assembly work is facilitated.

Description

[Detailed Description of the Invention] [Object of the Invention] (Field of Industrial Use) The present invention relates to a suction port body for electric cleaning used in general households, and particularly relates to a suction port body connected to a suction port body. The handling of the connecting pipe and the coupling pipe rotatably connected to this connecting pipe relates to the prevention means.

(Prior Art) In the suction port body of a conventional vacuum cleaner, as shown in FIGS. 4 and 5, there is a connection @ connected to the suction port body 1.
2 and the bent joint pipe 3 which is fitted and connected in the circumferential direction to the outer circumferential side of the connecting pipe 2, in order to prevent the joint pipe 3 from being pulled out, A structure is adopted in which circular grooves 4.5 are formed along the rotational direction and facing each other on the circumferential surface, and a connecting ring body 6 made of an elastic wire is rotatably fitted into these circular grooves 4.5. Ta. The connecting pipe 2 and the joint pipe 3 are sometimes assembled by fitting the inner peripheral side of the connecting ring body 6 into the circular groove 4 on the outer peripheral part of the connecting pipe 2, and then fitting the connecting pipe 2 into the joint pipe 3. do.

At this point, the connecting ring body 6 elastically contracts in diameter by being pressed by the starting joint pipe 3, and connects the connecting pipe 2 and the joint pipe 3.
When the circular grooves 4.5 overlap, it returns to its original shape and the outer circumferential side is fitted into the circular W5 of the inner circumferential portion of the joint tube 3.

In addition, in FIGS. 4 and 5, 7 indicates the suction port body 1.
An electric wire 8 is a terminal electrically connected to this electric wire 7, and these electric wires 7 and terminals 8 are connected to the joint pipe 3 by screws 9.
It is held by a cover body 10 attached to the outer periphery of.

(Problem to be Solved by the Invention) However, in the suction port body of the conventional vacuum cleaner as described above, the connection pipe 2 and the joint pipe 3 are prevented from being disconnected by the connecting ring 6, so that the connection pipe 2 Once the connecting pipe 3 and the connecting pipe 3 are connected, they cannot be removed, and the connecting pipe 2 must be inserted into the joint pipe 3 while compressing the connecting ring 6, which reduces the efficiency of assembly work. There was a bad problem.

The present invention aims to solve these problems, and has a simple structure that can reliably prevent the connecting pipe and the joint pipe from being pulled out, is easy to assemble, and allows the connecting pipe and the joint pipe to be removed from each other after connection. It is an object of the present invention to provide a suction port body for a vacuum cleaner that can be used as a suction port for a vacuum cleaner.

(Structure of the Invention) (Means for Solving the Problems) The suction port body of the vacuum cleaner of the present invention is provided with a dust suction port on the lower surface and an electric load such as an electric motor for driving a rotating brush. a main body, a connecting pipe connected to the rear of the suction port main body so as to communicate with the dust suction port so as to be rotatable up and down;
A bent joint pipe is fitted and connected to the outer circumferential side of the connecting pipe so as to be rotatable in the circumferential direction, and a cover body is attached to the outer circumference of the joint pipe and holds an electric wire for supplying power to the electrical load. an engaging groove is formed along the circumferential direction on the outer circumferential portion of the connecting pipe, a through hole is formed in the joint pipe to overlap with the engaging groove, and the cover body has the above-mentioned A projection is formed that is slidably engaged with the engagement groove through the through hole and prevents the connecting pipe and the joint pipe from being pulled out, and this projection is located at an upper side when the joint pipe is turned upward. That is, it is located on the opposite side of the direction in which the load is applied to the suction port body during use.

(Function) When assembling the vacuum cleaner suction port of the present invention, after fitting the joint pipe to the outer circumferential side of the M live pipe, the cover body for holding the electric wire is attached to the joint pipe. The protrusion is engaged with the engagement groove of the connecting pipe through the through hole of the joint pipe. In this way, the protrusion of the cover body is slidably engaged with the engagement groove along the circumferential direction of the connecting pipe, so that the connecting pipe and the joint pipe can freely rotate in the circumferential direction while being prevented from being removed. Connected. On the other hand, when the connecting pipe and the joint pipe are to be removed from each other, the cover body is removed from the joint pipe, the protrusion of the cover body is removed from the engagement groove of the joint pipe, and the one-piece pipe is pulled out from the joint pipe.

When in use, for example, connect a hose to the main body of the vacuum cleaner, connect an extension pipe to this hose, connect a joint pipe to this extension pipe, hold the grip of the hose, etc., and move the suction port main body to the floor. When running on surfaces to be cleaned, such as, by rotating the bent joint pipe in the circumferential direction with respect to the connecting pipe, the running direction of the suction port body can be easily changed. In addition, especially when the suction port body is lifted during cleaning, the load on the suction port body causes the lower side of the connecting pipe connected to the rear of the suction port body to serve as a fulcrum, and the upper side moves away from the joint pipe. A force is applied to the connecting pipe, but when cleaning, the joint pipe is normally facing upward and the protrusion is located on the upper side. This ensures that the material does not come off.

(Example) Hereinafter, the structure of an example of the suction port body of a vacuum cleaner of the present invention will be described based on FIGS. 1 to 3.

21 is a suction port body, and this suction port body 21 is composed of a lower case 22 and an upper case 23 attached above the lower case 22. A dust suction port 24 is formed on the front side of the bottom surface of the lower case 22. Further, an attachment opening 25 is formed at the center of the rear part of the suction port body 21, extending from the lower case 22 to the upper case 23.

A rotary brush 26 is rotatably disposed inside the suction port main body 21 facing the dust suction port 24, and an electric current I71@27 as an electrical load for rotationally driving the rotary brush 26 is provided. It is located on the rear side. That is, the pulley 2 fixed to the rotating shaft of this electric motor 21
8 and a pulley (
A belt 29 for transmitting rotation is passed between the two (not shown).

Reference numeral 31 denotes a connecting pipe, and the front part of the connecting pipe 31 is an approximately semi-cylindrical main body attachment part 32 with an open front face, and the rear part is an approximately cylindrical joint pipe attachment part 33 with an open rear face. It has become. The connecting pipe 31 is located at the rear of the suction port main body 21 and communicates with the dust suction port 24, and is held between the lower case 22 and the upper case 23 so as to be rotatable up and down by a predetermined angle in the front and back direction. ing. That is, support shaft portions (not shown) protrudingly formed on both side end surfaces of the main body mounting portion 32 are connected to both cases 22.2.
It is rotatably fitted into a bearing hole (not shown) formed at the joint portion of No. 3. Moreover, the joint pipe attachment part 33 is
It protrudes rearward from the mounting opening 25 so as to be able to rise and fall freely.

The outer circumferential surface of the joint pipe attachment portion 33 is provided with an arc-shaped engagement groove 3 formed by a pair of annular ribs 34 at the front and rear along the circumferential direction.
5 is formed. Furthermore, protruding stopper portions 36 are formed on both left and right sides of the engagement groove 35, respectively. Further, a flange portion 37 extending in the circumferential direction is formed on the outer circumferential surface of the joint pipe attachment portion 33 at an Off position of the engagement groove 35 .

Reference numeral 41 denotes a joint pipe, and the joint pipe 41 is formed into a bent cylindrical shape in a side view, and the front portion is rotated in the circumferential direction toward the outer circumferential side of the joint pipe attachment portion 33 of the connecting pipe 31. It is a connecting pipe attachment part 42 that is movably fitted, and a tapered connecting part 43 is formed at the rear part that is bent with respect to the connecting pipe attachment part 42 .

The connecting pipe attachment part 42 has a through hole 44 that overlaps with the engagement groove 35 of the connecting pipe 31 on the bending direction side of the tapered connecting part 43, that is, this tapered connecting part 43 is located most upwardly. A through hole is formed at the top position when the Further, on the inner circumferential surface of the connecting pipe attachment part 42,
An annular protrusion 45 extending in the circumferential direction is formed behind the through hole 44 .

Further, on the outer circumferential surface of the joint pipe 41 on the bending direction side of the tapered connecting portion 43, a rectangular chamber-forming rib 46 is formed to protrude, and a cylindrical rib 46 is located within the rib 46. A boss 47 is formed to protrude.

Reference numeral 51 denotes a planar cover body with an open bottom surface, and this cover body 51 has a screw 53 inserted into a through hole 52 formed on the top surface thereof and screwed into the boss 47 to connect the joint pipe 41. It is detachably attached on the rib 46.

A protrusion 54 having an L-shaped side surface is formed on the front surface of the cover body 51 and protrudes downward.
4 is inserted into the through hole 44 of the coupling pipe 41 and is slidably engaged with the engagement W435 on the upper side of the coupling pipe 31 from the outside in the radial direction.

Further, the electric VJ machine is mounted on the front part of the cover body 51.

One end of a 1W cord 5G, which is one wire for feeding power to 27, is held. The other end of the power cord 56 is introduced into the suction port body 21 from the outside and is electrically connected to the electric If 127 via electronic components, lead wires 57, and the like. Further, the cover body 51 holds a pair of bottle-shaped power receiving terminals 58 that protrude rearward from the cover body 51, and the power cord 56 is electrically connected to these terminals 58 within the cover body 51. It is connected to the.

Then, in order to roughly angle the connecting pipe 31 and the joint pipe 41, after fitting the joint pipe fitting part 33 of the connecting pipe 31 into the connecting pipe fitting part 42 of the joint pipe 41, the cover body is attached to the joint pipe 41. 51 is attached, and the protrusion 54 of the cover body 51 is engaged with the engagement groove 35 on the upper side of the connecting pipe 31 via the through hole 44 of the joint pipe 41. In this way, the connecting pipe 31 and the joint pipe 41 are rotatably connected in a state in which removal is prevented by the engagement between the projection 54 and the engagement groove 35. Note that the distal end surface of the connecting tube attachment portion 42 of the joint tube 41 and the annular projection 45 are slidably abutted on the collar portion 37 of the connecting tube 31 and the annular rib 34 on the rear side, respectively.

Also, if there is a need for something, once the connecting pipe 3 has been connected,
1 and the joint pipe 41, remove the joint pipe 41 from each other.
Remove the cover body 51 from the
4 from the engagement groove 35 of the connecting pipe 31,
from the M live pipe attachment part 42 of the connecting pipe 31 to the joint pipe attachment part 33 of the connecting pipe 31.
All you have to do is remove it.

Next, the operation of the above embodiment will be explained.

During cleaning, for example, one end of a hose is connected to the main body of the vacuum cleaner, one end of an extension tube is connected to the other end of the hose, and the tapered connection part 4 of the joint tube 41 is connected to the other end of the extension tube.
3 is removably fitted and connected.

At this time, the power receiving terminal 58 on the joint tube 41 is connected to the power feeding terminal provided on the extension tube. Then, the suction port body 21 is slid on the surface to be cleaned, such as the floor, by holding the grip part of the hose or the like. At this time, the connecting pipe 31 is rotated up and down with respect to the suction port main body 21, and the joint pipe 41 bent with respect to the connecting pipe 31 is moved in the circumferential direction ua, that is, this joint pipe 41
Since the tapered connecting portion 43 swings in the left-right direction, the suction port main body 21 can be easily moved, and its direction of movement can be easily changed.

Then, from the vacuum cleaner body, via the electric wires provided along the hose and extension pipe, the terminal 58 that relays these electric wires, and the power cord 56 provided in the suction port body 21,
ffi! 111127, the rotating brush 26 is driven to rotate, and the rotating brush 26 scrapes away dust from the surface to be cleaned, such as a carpet. In addition, the suction port body 2 is driven by the electric blower inside the vacuum cleaner body.
Dust sucked in from the dust suction port 24 of No. 1 is collected inside the vacuum cleaner body via the connecting pipe 31, the joint pipe 41, the extension pipe, and the hose. Y! led to a room.

Further, as shown in FIG. 3, the rotation of the coupling pipe 41 relative to the coupling pipe 31 is such that the protrusion 54 of the cover rest 51 contacts the stopper part 36 in the engagement groove 35 of the coupling pipe 31 from the circumferential direction. is regulated within a range of approximately 180°. More specifically, this range is defined by the tapered connection portion 43 of the joint pipe 41.
The distance is about 90 degrees to the left and right from the most upward position, which is sufficient for cleaning. During cleaning, the grip of the hose cannot be lowered below the surface to be cleaned, and the joint pipe 41 can only be rotated from a state in which its tapered connection part 43 faces upward to a state in which it faces horizontally. It's for a reason.

However, of course, the joint pipe 41 may be rotatable by 180 degrees or more. In any case, by restricting the rotation range of the joint tube 41, the power cord 56 is prevented from becoming excessively twisted or twisted, and breakage of the power cord 56 is prevented.

By the way, when the suction port main body 21 is lifted during cleaning, for example, the load of the suction port main body 21 causes the connecting pipe 31 to have a fulcrum on the lower side and a point of force on the upper side, that is, in a direction away from the joint pipe 41 on the upper side. Force is added to. However, during cleaning, the tapered connection part 43 of the joint pipe 41 is normally oriented upward, and the projection 54 for preventing removal is located on the upper side, that is, on the opposite side to the direction in which the load of the suction port body 21 is applied. Since the connecting pipe 31 is held down by the protrusion 54 on the side of the force point away from the fulcrum, the pull-out prevention works effectively and the connecting pipe 31 is reliably prevented from coming off from the joint pipe 41.

Furthermore, since the protrusion 54 is located on the upper side as described above,
It doesn't put a big burden on you.

According to the above structure, the structure is simple because the cover break 51 for holding the power cord 56 and the terminal 58 is used to prevent the connecting pipe 31 and the joint pipe 41 from being pulled out from each other. Moreover, when assembling the connecting pipe 31 and the joint pipe 41, compared to the case where the connecting ring body prevents the disconnection,
Assembly is easy because there is no need to compress the connecting ring body. Furthermore, the connecting pipe 31 and the joint pipe 41 can be connected and then disconnected again, which is advantageous in manufacturing.

〔Effect of the invention〕

According to the present invention, a protrusion is formed on the cover for holding the electric wire attached to the joint pipe, and the protrusion is slidably engaged with an engagement groove formed on the connecting pipe, so as to move in the circumferential direction. Since the connecting pipe and the joint pipe, which are rotatably connected to each other, are prevented from being removed from each other, the structure is simple and easy to assemble, and the cover can be removed even after the connecting pipe and the joint pipe are connected. This allows the connecting pipe and the joint pipe to be removed from each other.

Since the protrusion is formed in a position where the bent joint pipe faces upward and is on the upper side when 1 = 1, for example, when the suction port body is lifted during cleaning, the protrusion is normally located on the upper side, which is the point of effort. By doing so, it is possible to effectively and reliably prevent the M live pipe from coming off from the joint pipe.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an embodiment of the suction port body of the electric sludge remover of the present invention, Fig. 2 is an exploded perspective view of the same, and Fig. 3 shows the protrusion of the cover body and the engagement groove of the connecting pipe. ■ in Figure 1 showing the relationship between
-■ Cross-sectional view, Figure 4 is an exploded perspective view of the connecting pipe and joint pipe vicinity showing an example of a conventional vacuum-like suction port body, and Figure 5 is a cross-sectional view of the connecting part of the same connecting pipe and joint pipe. be. 21...Suction port body, 24...Dust suction port, 27...Electric motor as electrical load, 31...Connecting pipe, 35...Engagement groove, 41...Joint pipe, 44...Through hole, 51...・Cover body,
54... Protrusion, 56... Power cord which is an electric wire. Figure 3

Claims (1)

[Claims] (1) A suction port body with a dust suction port provided on the lower surface and an electrical load, a connecting pipe connected to the rear part of the suction port main body so as to be able to move up and down, and communicate with the dust suction port, and this connection A bent joint pipe is fitted and connected to the outer circumference of the pipe so as to be rotatable in the circumferential direction, and a cover body is attached to the outer circumference of the joint pipe and holds an electric wire for supplying power to the electrical load. , forming an engagement groove along the circumferential direction on the outer periphery of the connecting pipe, and forming a through hole in the coupling pipe that overlaps with the engagement groove;
The cover body has a protrusion that is slidably engaged with the engagement groove through the through hole and prevents the connecting pipe and the joint pipe from coming off, at a position that is on the upper side when the joint pipe is turned upward. A suction port body for a vacuum cleaner, characterized in that: