JP3179728B2 - Adhesive structure of suction hose for vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction hose bonding structure for bonding a main body side connection pipe and a hand operation pipe to both ends of a suction hose for a vacuum cleaner.

[0002]

2. Description of the Related Art As shown in FIG. 9, a vacuum cleaner comprises a cleaner body 21, a suction hose (flexible tube) 22 detachably connected to a body suction port, and a hose 22.
Extension pipes 24 and 25 (which may be telescopic pipes) detachably connected to the
And a suction opening 26 which is detachably connected to the end of the suction port. In addition, the main body side connection pipe 27 is adhered to the main body suction port side of the suction hose 22, and the hand operation pipe 23 is adhered to the other end side. There are built-in operation switches 28 for performing strong / weak), stop, and the like, and wiring (not shown) is made to the suction hose 22 and the main body side connection pipe 27.

As shown in FIG. 10, the suction hose 22 has a piano wire 3 having a hard or soft vinyl chloride coating 30 on the inner surface of a soft vinyl chloride hose body 29.
22A in which spirally wound 1 is inserted and bonded
As shown in FIG. 11, there is a type 22B in which a spiral piano wire 34 is inserted and bonded between inner and outer two-layer hose bodies 32 and 33 made of soft vinyl chloride.

[0004]

When the suction hose 22 is connected, an adhesive is applied to each of the pipes 23 and 27 in advance, and is inserted into both ends of the suction hose 22 while rotating. At this time, in the suction hose 22A to which the coated piano wire 31 is adhered, a gap 35 formed between both sides of the coating 30 on the inner surface of the hose body 29 is formed.
The adhesive is accumulated in the adhesive and the adhesive strength can be increased.

However, the inner and outer two-layer hose bodies 32, 33
Suction hose 22B (see FIG. 11)
Since there is no covering on the piano wire, it can be manufactured at low cost. However, since no concave portion is formed on the inner surface of the inner hose body 32, there is no adhesive pool, and the connection portion of each pipe 23, 27 is connected to a suction hose. When pushed in from the open end, the adhesive is pushed to the tip of each pipe connecting portion and is stretched thinly, so that there is a disadvantage that the adhesive strength is weakened. Therefore, as shown in FIG. 12, the projections 3 are formed on the outer peripheral surfaces 23A, 27A of the connecting portions of the tubes 23, 27.
6 and a small rib 37 projecting from the hose cover 38 to supplement the adhesive force or cover the adhesive surface from the outside.
The protrusion 36 and the small rib 37 are provided on the inner surface of the tube 23, and the suction hose 22B is sandwiched between the connection portions 23A and 27A of the tubes 23 and 27 to supplement the adhesive force. However, there is a problem that when these are strengthened, the connection workability is deteriorated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above situation, and an object of the present invention is to allow the adhesive to sufficiently accumulate in a main body side connection pipe and / or a hand operation pipe. An object of the present invention is to provide an adhesive structure for a suction hose for a vacuum cleaner, which can ensure a sufficient mutual adhesive force with a suction hose.

[0007]

According to the present invention, the following technical measures have been taken to solve the above-mentioned problems. That is, according to the present invention, a main body side connection pipe removably inserted and connected to the suction port of the cleaner body is inserted and bonded to one end side of the suction hose of the vacuum cleaner while rotating the hand operation pipe to the other end side. An adhesive structure for a suction hose, wherein the connection pipe and / or
Or, on the outer peripheral surface of the hose connection part of the
With multiple continuous or discontinuous grooves that cross diagonally
To the formation of the sump recess of the adhesive that features a.

In this case, when an adhesive is applied in advance to the hose connection portion of the connection pipe and / or the hand-operated operation pipe and is inserted into the opening of the suction hose, the adhesive uniformly enters the pool recesses and is sufficiently removed. Strong adhesive strength can be obtained with an appropriate amount of adhesive. Also, the pre-Symbol sump recess, the axial and / or circumferential direction, or a continuous or discontinuous plurality of grooves intersecting the axial direction and oblique, and the sump recess, to a number of small recessed holes The thickness of the adhesive layer between the suction hose and the suction hose can be increased to increase the adhesive force and improve the product quality.

Furthermore, the pre-Symbol sump recess can be a satin or knurled grooves, Ru can be achieved enhancing adhesion.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a first embodiment of the present invention, in which a suction hose 1 is a spirally wound piano wire 4 between an inner tube 2 and an outer tube 3 made of soft vinyl chloride.
Is built-in. Then, a connection portion 5A of the hand operation tube 5 is inserted and adhered to an end opening of the suction hose 1, and a cleaner body (not shown in FIG. 9) is inserted into the other end opening of the suction hose 1. The connection portion 6A of the main body side connection pipe 6 which is detachably connected to the suction port 21 is inserted and adhered.

The piano wire 4 is used as a conductor for transmitting a motor control signal of the cleaner body 21. In the case of a power brush cleaner, the conductor is arranged along the piano wire 4. Since the connecting portion 6A of the main body side connecting tube 6 has the same configuration as the connecting portion 5A of the hand-operated tube 5, it is not separately shown, but is shown in FIG.
In FIG. The two pipes 5 and 6 are provided with a circumferential groove 8 for fitting the hose connection portion cover 7 continuously to the base ends of the connection portions 5A and 6A. In addition, a large number of grooves 9 inclined at 45 degrees or other angles with respect to the pipe axis are formed in the connection portions 5A and 6A.
The groove 9 is provided over the front surface and forms a reservoir for the adhesive. The depth of the groove 9 is, for example, 0.1 to
It is about 1 mm, preferably about 0.1 to 0.4 mm (more preferably 0.2 to 0.25 mm).

In the above embodiment, when the operation tube 5 and the main body side connection pipe 6 are connected to both ends of the suction hose 1, as shown in FIG.
A suitable amount of adhesive B is applied to the inner surface of the open end of
The connection parts 5A and 6A are pushed into the hose opening while rotating. At this time, the adhesive B enters the groove 9 and spreads evenly on the inner surface of the suction hose 1 and the outer peripheral surfaces of the connecting portions 5A and 6A, so that the adhesive sufficiently accumulates in the groove 9. The suction hose 1 and the connecting portions 5A and 6A bonded in this manner have a necessary and sufficient bonding force, and can no longer be separated from each other.

According to the above embodiment, the outer peripheral surfaces of the connection portions 5A and 6A of the hand operation pipe 5 and the main body side connection pipe 6 are not provided with projections or ribs as in the prior art. Insertion is easy, and since the adhesive spreads over the entire mating surfaces, strong adhesion can be achieved. At the time of the bonding operation, an adhesive may be applied to both or any one of the connection portions 5A and 6A of the hand operation tube 5 and the main body side connection tube 6 and the inner surface of the suction hose 1. Further, in the above-described embodiment, an appropriate matte pattern (or a knurled groove) may be provided on the entire outer peripheral surface of each of the connecting portions 5A and 6A in addition to the groove 9 to increase the number of concave portions of the adhesive. Can be.

FIG. 2 shows a main part of a second embodiment of the present invention. The difference from the first embodiment is that the adhesive on the outer surfaces of the connecting portions 5A and 6A of the hand-operated pipe 5 and the main body connecting pipe 6 is shown. the reservoir recess exchange obliquely relative grooves 10A, 10B (groove 10A the tube axis that intersects obliquely (45 degrees) relative to the tube axis
The groove 10B is obliquely intersecting the pipe axis.
It is inclined in the opposite direction to the number of grooves 10A. ), And the same operation and effect as the first embodiment can be expected. FIG. 3 shows a main part of a third embodiment of the present invention. The difference from the second embodiment is that the adhesive reservoir recess is formed by a groove 11A parallel to the pipe axis of the two pipes 5, 6. And the same effect as the second embodiment.

FIG. 4 shows a main part of a fourth embodiment of the present invention. The difference from the first embodiment is that the adhesive reservoir recess is formed by a groove parallel to the tube axis of both tubes 5 and 6. 12, which has the same operation and effect as the first embodiment. FIG. 5 shows a main part of a fifth embodiment of the present invention,
The difference from the first embodiment is that the adhesive reservoir concave portion is provided with a circumferential groove 1 perpendicular to the tube axis of the two tubes 5 and 6.
3 has the same operation and effect as the first embodiment. The groove 13 can be a spiral groove slightly inclined with respect to the pipe axis.

FIG. 6 shows a main part of a sixth embodiment of the present invention, which is different from the other embodiments in that the adhesive reservoir recess is formed by a number of small recesses 14. The same operation and effect as those of the other embodiments can be obtained. FIG. 7 shows a main part of the seventh embodiment of the present invention, which is different from the fourth embodiment in that the groove 12 is provided discontinuously (that is, intermittently). The same operational effects as the form can be expected. Also in the first to third embodiments and the sixth embodiment, the grooves 9, 10A, 10B, 11,
13 can be discontinuous as in the seventh embodiment. Also, in the second to seventh embodiments, each pipe 5,
In addition to the adhesive pool recesses, the outer peripheral surfaces of the connection portions 5A, 6A of the sixth embodiment are sandblasted or grooved by knurling to form a suction hose 1
Can be enhanced.

The present invention is not limited to the above embodiment. For example, the present invention is applied to a suction hose or the like in which a spirally wound coated piano wire is adhered to the inner peripheral surface of the suction hose body shown in FIG. Thus, a stronger adhesive force may be obtained. In addition, small protrusions and small ribs are protruded on the outer peripheral surfaces 23A and 27A of the connection portions of the pipes 23 and 27, and small protrusions and small ribs are protruded on the inner surface of the hose cover 38, thereby deteriorating the connection workability. The adhesive force may be supplemented to the extent that it does not occur, and the tensile force may be countered.

[0018]

According to the present invention, it is possible to sufficiently secure the mutual adhesion between the support action hose and the body-side connecting pipe and the hand operation pipe, each pipe connection to the service action hose opening can be performed parts inserted smoothly, Ru can be achieved enhancing adhesion.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing a first embodiment of the present invention.

FIG. 2 is a front view of a pipe connection part which is a main part of a second embodiment of the present invention.

FIG. 3 is a front view of a pipe connection part, which is a main part of a third embodiment of the present invention.

FIG. 4 is a front view of a pipe connection part which is a main part of a fourth embodiment of the present invention.

FIG. 5 is a front view of a pipe connection part which is a main part of a fifth embodiment of the present invention.

FIG. 6 is a front view of a pipe connection part which is a main part of a sixth embodiment of the present invention.

FIG. 7 is a front view of a pipe connection part which is a main part of a seventh embodiment of the present invention.

FIG. 8 is an explanatory diagram of one of the bonding procedures in the embodiment of the present invention.

FIG. 9 is an overall perspective view showing an example of a vacuum cleaner.

FIG. 10 is a partially cutaway front view showing an example of a suction hose for a vacuum cleaner.

FIG. 11 is a partially cutaway front view showing another example of a suction hose for a vacuum cleaner.

FIG. 12 is a front view showing a conventional pipe connection portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Suction hose 5 Hand operation pipe 5A connection part 6 Main body side connection pipe 6A connection part 9 groove 10A, 10B groove 11A, 11B groove 12 groove 13 groove 14 Small concave hole

Claims (2)

(57) [Claims] 1. A main body side connection pipe which is removably inserted and connected to a suction port of a vacuum cleaner main body at one end side of a suction hose of the vacuum cleaner, and is inserted and connected to the other end side while rotating a hand operation pipe. A connection structure of a suction hose to be attached, wherein the connection pipe and / or the hand connection pipe has an outer peripheral surface of a hose connection portion which is continuous or discontinuous and crosses obliquely with respect to a pipe axis.
An adhesive structure for a suction hose for a vacuum cleaner, wherein a plurality of grooves are provided to form a recess for collecting an adhesive. 2. The reservoir recess crosses obliquely with a tube axis.
Continuous or discontinuous inclined in the opposite direction to the plurality of grooves
The suction hose bonding structure for a vacuum cleaner according to claim 1, wherein a plurality of continuous grooves are provided .