JP4847349B2 - Bath water supply hose for washing machine - Google Patents

Description

  The present invention relates to a washing machine incorporating a bath water feed pump that uses bath water, and more particularly to an improvement of a bath water feed hose for a washing machine for connection to a bath water feed pump.

  In recent washing machines, washing machines equipped with a water supply port for supplying tap water and a bath water supply pump for using bath water are becoming mainstream for the purpose of saving water or improving the washing rate.

  A bath water feed hose for a washing machine used for a bath water feed pump is disclosed in Patent Document 1, for example.

  When using bath water, the bath water supply pump provided on the washing machine body side and the bathtub are connected by a bath water supply hose. In principle, the bath water supply hose is connected to the bath water supply hose. It is configured to evacuate and suck up bath water.

JP-A-11-179092

  However, the connection joint base of the bath water supply hose for a washing machine is affected by external forces such as torsion and bending applied to the hose and the connection joint during operation of the washing machine or during operation. For this reason, a gap is generated between the hose and the connection joint base, and air enters the hose, so that the evacuation in the hose cannot be maintained, and the function of supplying bath water is impaired.

  Therefore, a hose protection cylinder that surrounds the connection portion of the hose portion connected to the connection joint base portion from the outer peripheral side is provided to suppress the generation of a gap. However, the work of attaching the hose protection cylinder is troublesome.

  An object of this invention is to provide the bath water supply hose for washing machines in which the assembly attachment of a hose protection cylinder is unnecessary in view of said problem.

  The present invention includes a connecting joint base connected to a main body of a washing machine with a bath water feed pump, a hose portion connected to the connecting joint base and extending long, and a spiral reinforcing member wound in a spiral shape, In a bath water supply hose for a washing machine having a water supply unit as a suction port provided at the tip of the hose part, the connection joint base part is a hose screw-in connection provided with a spiral protrusion on the outer periphery of which the inner periphery of the hose part is screwed. And a hose protection cylinder that surrounds a connection portion of the hose part screwed and connected to the hose screwed connection part from the outer peripheral side, and the hose protection cylinder is formed integrally with the connection joint base. Features.

  ADVANTAGE OF THE INVENTION According to this invention, the external force at the time of attachment to a hose part and removal can be suppressed by the hose protection cylinder integrally formed in the connection joint base part of the front-end | tip of the bath water supply hose for washing machines. For this reason, it is possible to provide an inexpensive and stable quality bath water supply hose for a washing machine without impairing airtightness on the way.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 shows a use state diagram of bath water supply of a washing machine which is an embodiment of the present invention.

  The upper top cover 2 of the washing machine body 1 is provided with a bath water supply pump 22 that sucks up the bath water 11 remaining in the bathtub 10 in addition to a water supply port (not shown) for supplying tap water.

  The bath water feed pump 22 has a bath water feed connection port 3.

  The bath water supply hose 4 for a washing machine has a connection joint base 5, a hose part 40 that extends to the connection joint base 5 and extends long, and a water supply unit 9 as a suction port provided at the tip of the hose part 40.

  The bath water supply hose 4 for the washing machine is detachably connected to the bath water supply connection port 3 of the bath water supply pump 22 at the distal end side of the connection joint base 5.

  Here, utilization of the bath water 11 will be described with reference to FIGS.

  As shown in FIGS. 2 and 3, a connecting joint base 5 of a washing machine bath water supply hose 4 is inserted and connected to the bath water supply port 3.

  An O-ring 7 is attached to the recess 6 of the connection joint base 5 to seal the airtightness with the bath water supply port 3 and a locking lever 8 is provided at the connection joint base 5 to provide a bath water supply hose 4 for the washing machine. The stopper is fixed.

  In addition, a water supply unit 9 is connected to the other one of the bath water supply hose 4 for the washing machine and is submerged in the bath water 11 of the bathtub 10. Thus, the bath water 11 can be supplied by the bath water supply pump 22 provided in the top cover 2.

  According to the customer's washing condition set state, the water supply is switched between tap water and bath water 11 using an electromagnetic valve, and water is poured into the washing tub.

  Next, the washing machine bath water supply hose 4 which is the main part of the present invention will be described in detail.

  The embodiment of the present invention will be described with reference to FIGS. 4 and 5 and FIGS. 6, 7 and 8 for comparison.

  As shown in FIGS. 4 and 5, the hose portion 40 of the washing machine bath water supply hose 4 has a helical reinforcing member 13 that is thermally welded to the outer periphery of the bath water supply hose 4 and wound spirally.

  The connection joint base 5 has a hose screw connection 12. The hose screw connection 12 has a spiral protrusion 14 on the outer periphery. The hose part 40 is screwed into the outer periphery of the hose screw connection part 12.

  The helical reinforcement member 13 of the hose part 40 and the spiral protrusion 14 of the hose screw connection part 12 are formed to have the same helical pitch, so that the hose part 40 is reliably screwed into the hose screw connection part 12.

  Further, in the connection joint base portion 5, a hose protection cylinder 15 having an inner diameter larger than the outer diameter of the hose portion 40 is integrally formed on the outer periphery of the hose screw-in connection portion 12. The hose protection cylinder 15 is formed of the same synthetic resin material as the connection joint base 5 and the hose screw-in connection 12.

  The inner diameter of the hose protection cylinder 15 is an optimum gap corresponding to the outer diameter of the spiral reinforcing member 13 of the hose portion 40.

  The hose protection cylinder 15 which is the optimum gap suppresses the influence of external force such as torsion and bending applied to the hose portion 40 and the connection joint base portion 5 at the time of operation or removal every time the washing machine is used. Thereby, generation | occurrence | production of the clearance gap which arises between the hose part 40 and the hose screwing connection part 12 can be suppressed.

  Moreover, since the hose protection cylinder 15 is integrally formed with the connection joint base portion 5, it is not necessary to attach the hose protection cylinder 15 after the hose portion 40 is connected, and assembly is easy.

  Further, the spiral convex portion 14 provided on the outer periphery of the hose screw-in connection portion 12 and the inner peripheral side of the hose protection cylinder are formed by a rotary mold release mold. Thereby, there is no parting line, it is excellent in airtightness, and it can comprise so that a vacuum degree can be maintained.

  Here, the length dimension relationship between the hose protection cylinder 15 and the hose screw-in connection portion 12 will be described.

  5 and 4 show the assembly of the hose portion 40 and the connection joint base portion 5.

  Before screwing the hose part 40 into the hose screw connection part 12 and inserting it, the adhesive application part 17 can be applied manually or with an automatic machine to the entire circumference of the hose screw connection part 12 where it does not wrap with the hose protection cylinder 15. Can be formed.

  That is, the hose screw-in connection part 12 has an adhesive application part 17 extending so as to protrude outward from the tip side of the hose protection cylinder 15.

  For this reason, since it is easy to apply the adhesive 16 and the adhesive 16 is applied without excess or deficiency, a good connection of the hose portion 40 can be provided.

  In addition, the hose screw connection portion 12 and the adhesive 16 at the tip of the hose portion 40 wrap around to the tip of the hose portion 40 at the insertion depth (base side) of the hose screw connection portion 12 of the hose portion 40. A viewing window 18 is provided to confirm the above.

  Since the screwing of the hose part 40 can be seen directly from the viewing window 18, the connection assembly of the hose part is eliminated and defective.

  Needless to say, even if a plurality of the viewing windows 18 for confirmation are provided in the periphery, there is no problem in achieving the confirmation purpose.

  6, FIG. 7, and FIG. 8 are listed for comparison with the examples of the present invention.

  As shown in FIG. 6, the adhesive 16 is applied to the hose screw connection portion 12 and the hose portion 40 is screwed and inserted. The hose screw connection 12 of the washing machine bath water supply hose 4 is influenced by the external force due to external force applied to the washing machine bath water supply hose 4 attached to or removed from the washing machine. Sex is incomplete. There was a problem that external air entered there and the degree of vacuum decreased, and the bath water 11 could not be sucked up by the bath water supply pump 22.

  In order to reduce the influence of the external force, the protective sleeve 19 is provided separately as shown in FIG. 8, and the hose portion 40 is screwed and inserted as in the assembled state of FIG. Then, the protective sleeve 19 is arrange | positioned so that the circumference | surroundings of the screw insertion part may be covered.

  The washing machine bath water supply hose 4 is configured so that a sleeve fixing bead 20 and a hose fixing bead 21 provided in the longitudinal direction of the protective sleeve 19 are fixed by ultrasonic welding.

  According to this configuration, the protective sleeve 19 is relatively less susceptible to external force during operation, but the protective sleeve 19 is a separate component from the connection joint base 5 in any case, and therefore together with the bath water supply hose 4. May swing.

  In addition, there is a problem that a separate protective sleeve 19 is required and the ultrasonic welding work is required, resulting in an increase in price.

  The problems of the comparative reference examples shown in FIGS. 6, 7, and 8 are solved as described above by the embodiment of the present invention.

The use state figure of bath water supply of a washing machine. The connection part of the bath water supply hose of the present invention and a washing machine. FIG. The connection joint sectional view of the present invention. FIG. 3 is a state diagram of incorporation in the embodiment of the present invention. Conventional example of bath water supply hose. Another conventional example of a bath water supply hose. Parts detailed drawing used for other conventional examples.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 22 ... Bath water supply pump, 4 ... Bath water supply hose, 5 ... Connection joint, 15 ... Hose protection cylinder, 18 ... Viewing window, 12 ... Hose insertion part, 17 ... Adhesive application part, 14 ... Spiral convex part.

Claims (5)

A connecting joint base connected to the main body of the washing machine with a bath water feed pump, a hose part connected to the connecting joint base and extending long and provided with a spiral reinforcing member wound spirally, and a tip of the hose part In a bath water supply hose for a washing machine having a water supply unit as a suction port provided in
The connection joint base includes a hose screwed connection part provided on the outer periphery with a spiral projection to which the inner periphery of the hose part is screwed, and a connection part of the hose part screwed to the hose screwed connection part from the outer peripheral side. Has a hose protection cylinder to enclose,
The hose protection tube is formed integrally with the connection joint base,
Provide a viewing window through which the connecting portion of the hose part can be seen in the hose protection cylinder,
The bath water supply hose for a washing machine, wherein the viewing window is located at a base side of the hose screw-in connection portion . In the bath water supply hose for a washing machine according to claim 1,
The said hose screwing connection part has the adhesive agent application part extended so that it might protrude outside from the front end side of the said hose protection cylinder, The bath water supply hose for washing machines characterized by the above-mentioned. In the bath water supply hose for a washing machine according to claim 1,
A bath water supply hose for a washing machine, characterized in that an inner peripheral side of the hose protection cylinder and an outer peripheral side of the hose screw-in connection part are formed by a rotary mold. In the bath water supply hose for a washing machine according to claim 1,
The said connection joint base has the water supply pump connection part connected to a bath water supply pump so that attachment or detachment is possible, The bath water supply hose for washing machines characterized by the above-mentioned. The bath water supply hose for a washing machine according to claim 4,
The water joint hose for a washing machine is characterized in that the connection joint base has a locking lever.

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