JPS6052816B2 - The mouth of the vacuum cleaner hose - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a spout with a switch case integrally formed at the end of a vacuum cleaner hose.

(Prior art and its problems) Vacuum cleaners with a remote switch attached to the mouth of the hose are widely used for both home and commercial use because it is convenient to turn on and off electricity to the vacuum cleaner itself.

-1-゛One round゜-nL-y-・ 1 From the point where the two buried coils are energized, (a)
Remove the coating from the coil, connect the (opening) core wire to the switch terminal or lead wire by soldering, etc., apply adhesive to the main body of the opening, insert the eye hose into the opening, and attach (7F4 vinyl tape). The hose with remote switch is assembled by fixing the coil and the mouth with screws, fixing the H switch cover with screws, and finally placing the hose cover over the terminal or the connection between the lead wire and the core wire.

This assembly method requires a large number of assembly man-hours, requires detailed work in a small space, requires a wide variety of jigs and tools, and requires a large amount of assembly time and manpower.

In addition, if a hose assembled in this way is used for a long time, there is a risk that the adhesive between the hose and the mouth may separate due to repeated bending or twisting of the hose, which may cause the connection between the core wire and the terminal or lead wire to break. However, there remained some difficulties in using the hose.

(Problems to be Solved by the Invention) In order to solve these problems, it is an object of the present invention to mold the mouth end of the switch case integrally with the hose without using an assembly type. (Technical Means) In order to solve this technical problem, the present invention provides a spout of a vacuum cleaner hose having two energized coils formed integrally with one end of the vacuum cleaner hose by injection molding. The technical means is to expose the current conducting body separated by a spacer on the bottom surface of a recess formed in the flesh wall of the mouth, and to make the head of the spacer protrude above the bottom surface of the recess.

(Operation of the technical means) According to the technical means, the mouth is formed directly on the end of the hose, so that the hose and the mouth are firmly fixed and integrated.

Additionally, at the same time as the mouth is formed, the switch case is formed, with the hose coil and current-carrying body passing through the mouth wall and exposed on the bottom, so the switch assembly process is almost complete except for the switch top cover. There will be.

(Effects of the Invention) From the above points, according to the present invention, not only can the troublesome process of assembling a switch be omitted, but also the work can be carried out in a healthy manner since no adhesive is used.

Further, when using the hose, there is no need for the hose and the mouth to separate from each other.

Furthermore, since the conductive portion is not exposed to the outside between the coil and the switch case, it is not affected by bending of the hose at all and will not be cut or disconnected during use.

(Example) Next, an example of molding a switch case opening according to the above technical means will be described with reference to the drawings.

First, cut off the hose wall 2 at the end of the hose 1,
The coils 3 and 4 are bent in the axial direction and positioned parallel to each other, and the synthetic resin coating on their tips is peeled off to expose the core wires 5 and 6 made of piano wire.

Next, a spacer 11 made of an insulating material is inserted into the rear ends of switch terminals 7 and 8 prepared separately, and the spacer 11 is inserted into the stoppers 9 and 10 formed at the rear of the terminals 7 and 8. Let them come into contact with you. here,
The rear ends of the terminals 7, 8 and the tips of the core wires 3, 4 are electrically connected by means such as soldering, and the hose is inserted into the end of the inner mold 20.

Next, the tips of the terminals 7 and 8 are held between the supports 21 fixed to the tips of the inner mold 20, and a spacer 11 is placed between the terminals.
The terminals 7 and 8 are positioned by interposing them.

This support may be, for example, of a clip type using a spring 32 shown in FIG. Thereafter, the mold is clamped from the outside with outer molds 25 and 26 configured as split molds.

A substantially rectangular convex portion 27 is formed on the inside of one of the outer molds 25, and the front portion of the inner wall surface of the convex portion 27 contacts the terminals 7, 8, or is provided with a groove so that the terminals 7, 8 can be connected to each other. A concave groove corresponding to the head 12 of the spacer 11 is provided at the rear so as to cover the upper part, and the head 12 is positioned within the convex portion 27 of the outer mold. j After the mold clamping of the outer molds 25 and 26 is completed, the liner 2
Rubber or synthetic resin is injected from 8 to form the mouth 1 into the desired shape.
Mold 5.

In the spout 15 thus completed, the terminals 7 and 8 are all embedded within the thickness of the spout 15 except for the tip and the contact portion with the protrusion 27, and the core wire 3, which is the conductive part of the coil, ，
4 is also embedded within the thickness of the mouth 15.

Moreover, the ends of the terminals 7 and 8 are held between the supports 21 and the rear ends of the spacers 1 are pressed by the inner and outer molds 20, 25 and 26.
1 and the spacer 11 is separated by the terminal stopper 9,
10 restricts forward movement, the terminals can sufficiently withstand the pressure during injection molding, and there is no risk of the terminals coming into contact with each other inside the mouth. Further, the concave portion above the mouth 15 formed by the convex portion 27 of the outer mold 25 serves as the switch case 16 as it is, and the exposed portions of the terminals 7 and 8 on the bottom surface 17 are used as they are as contacts of the switch.

After that, the contact parts of a known switch are assembled into the switch case, and a cover 34 is attached to cover the front end surfaces of the terminals 7 and 8 facing the front side of the mouth 15, and the mouth 15 at the end of the hose 1 is
The molding and switch installation are completed. Fig. 2 shows an example in which a known push/pull switch is incorporated into the above-mentioned switch case, in which a knob 31 and a slide spring 32 that is driven by its back and forth movement are combined, and a switch cover is fitted. It is configured.

In this case, spacer 1 protrudes from the bottom of the switch case.
The head 12 of 1 is used to perform the click-stop action of the push/pull switch. In the above explanation, the terminals 7 and 8 were separately prepared by punching out a flat plate into a single shape, as shown in FIGS. 1 and 2, but the core wire of the coil
, 6 may be made longer and their tips bent into a single shape as shown in FIG. 4, and used as they are as contacts of a switch.

Of course, the shape of the current carrying body is not limited to these shapes. Furthermore, since the head 12 of the spacer 11 is positioned within the concave groove of the outer mold 25, if the spacer 11 has a rounded shape, it is possible to adjust the position of the spacer 11 minutely when the mold is clamped. It is also suitable for performing a stop action.

Furthermore, if there is a possibility that the spacer 12 may be misaligned from side to side during mold clamping, a triangular recess 13 is formed in the center of the head as shown in FIG. A protrusion formed on the mold 25 may enter. The switch cover 33 may be fixed to the mouth 15 with screws, but it is better to form a recess in the periphery of the switch case in advance so that the switch cover can be fixed by fitting into the recess. Fewer assembly steps are required. The cover 34 that covers the exposed end surfaces of the terminals 7 and 8 may be fixed by forming a recess in the front surface of the mouth 15 and fitting into the recess, or as shown in FIG. The legs 35 may be made to protrude from both sides of the switch cover 34, and a protrusion 36 protruding from the lower surface of the switch cover 33 may be fitted into a recess provided at the tip of the leg 35 to be fixed.

[Brief explanation of the drawing]

Figure 1 is a left side vertical cross-sectional view showing the mold clamped state before injection molding, Figure 2 is a left side vertical cross-sectional view of the mouth where the push/pull switch is incorporated, and Figure 3 is a view of the core wire of the coil. Fig. 4 is a schematic diagram of the core wire as a terminal, Fig. 5 is a front view of the spacer in another embodiment, Fig. 6 is a left side view of the support, and Fig. 7 is a diagram of the spacer connected to the switch terminal. It is a perspective view of the terminal cover in an Example. 1...Hose, 7, 8...Terminal, 11
...Spacer, 15... Mouth, 20.
...Inner mold, 21...Support, 25, 26...
...outer mold, 28...liner.

Claims (1)

[Scope of Claims] 1. A mouth of a vacuum cleaner hose having two energized coils formed integrally with the end of the vacuum cleaner hose by injection molding, and a recess formed in the flesh wall of the mouth. A spout with a switch case integrated with a vacuum cleaner hose, characterized in that a current-carrying body separated by a spacer is exposed on the bottom surface, and the head of the spacer is projected above the bottom surface of the recess. 2. The mouth according to claim 1, wherein the current-carrying body exposed in the recess is a switch terminal connected to a coil. 3. The mouth according to claim 1, wherein the current-carrying body exposed in the recess is a coil extended from a hose.