JPH10165339A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent dust from being accumulated in a conducting part of a connection end. SOLUTION: A power receiving side partition wall part in which a receiving side terminal of a wire 12 is arranged is provided in a connection end of an extension tube having an insertion cylinder part, a power feeding side partition wall 11 in which a feeding-side terminal of the wire 12 is arranged in a connection end 6A of the extension tube 6 having an insertion port. 10, a pair of conducting pins which are connected to the terminal of the wire 12 and projected to the feeding side partition wall part 11 side are projectingly provided in the vertical wall part of the extension tube side partition wall, and a pair of pin insertion ports 15, 15 into which a pair of conducting pins are inserted are formed in the extension tube 6 side partition part 11. A pair of conducting contacts 13, 13 which can be brought in a conducting contact with the pair of conducting pins, are arranged in a conducting chamber 21 provided in the inner part of the pin insertion ports 15, 15 and a communicating port 23 for communicating with the insertion port 10 is opened in the bottom of the partition wall part 11 of the extension tube 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of connecting ends connected to each other, such as an extension pipe or a hose of a vacuum cleaner, and more particularly, to a vacuum cleaner for supplying power to a suction opening. The present invention relates to a vacuum cleaner in which poor conduction or the like between ends is improved.

[0002]

2. Description of the Related Art Generally, in a home vacuum cleaner,
As shown in FIGS. 3 to 6, a bellows-shaped hose 2 is detachably connected to a cleaner body 1 having a dust collection container, a dust collection motor, a suction fan, and the like. A hand operation unit 3 provided with hand operation switches at the distal end is provided. The hand operation unit 3 has a dust collection passage communicating with the dust collection container of the cleaner main body 1 and is provided with switches for controlling the rotation of a dust collection motor and the like of the cleaner main body 1. By operation, the suction negative pressure at the time of dust collection, the control of the rotating brush 5 of the suction port body 4, and the like are controlled. A plastic extension tube 6 is inserted into and connected to the dust collection passage of the operation unit 3. Extension tube 6
An extension pipe 7 is further connected to the distal end of the suction port, and a suction port 5 for collecting dust on the floor surface is connected to the extension pipe 7 on the distal end side.

FIG. 5 shows the structure of a connecting end between the extension pipes 6 and 7, and the connecting end 8 of the extension pipe 6 is shown in FIG.
Has an insertion opening 10 for inserting the insertion tube 9 of the extension tube 7, and a partition 11 is formed above the insertion opening 10. Conductive contacts 13, 13 connected to a power supply wire 12 are fixed in the partition 11.
Reference numerals 3 and 13 are fixed so as not to be easily displaced. The partition 11A of the extension tube 6 is provided with a pair of pin insertion openings 15 having substantially the same diameter through which the conduction pins 14 of the extension tube 7 are inserted, and when the conduction pins 14 are inserted into the pin insertion openings 15, And the conduction contact 13 can be conducted.

An engagement recess 16 is provided in the insertion tube 9 of the extension tube 7.
The engagement button 17 that engages with the engagement concave portion 16 is disposed in the partition wall 11 of the extension tube 6. The bottom of the partition 11 has an opening 18 through which the engaging projection 17A of the engaging button 17 moves up and down. The opposite side of the engagement protrusion 17A of the engagement button 17 is urged upward by a compression coil spring 19 disposed on the partition wall 11,
The engagement projection 17A is adapted to engage with the wall surface of the engagement recess 16 through the opening 18. The upper part of the partition part 11 is covered with a cover 20, and the edge of the cover 20 is
And the inner wiring 12 is sealed.

[0005]

By the way, the method of using the electric vacuum cleaner at home is to remove the suction port 4 and extend the extension pipe 6.
There are various cases, such as dust collecting with only 7. In particular, when cleaning the corners and corners of a room, dust is often collected only by the extension pipes 6 and 7.

However, in the conventional extension tubes 6 and 7,
The inside of the partition 11 is closed by the cover 20, and the partition 1 is closed.
1, a pair of pin insertion ports 15 is opened, and the opening 18 of the engagement button 17 communicates with the communication air passage A inside the extension pipes 6, 7, so that the extension pipe is connected without connecting the suction port body 4. When the dust is collected only at 6.7, the negative pressure from the opening 18 acts and the dust flows from the insertion port 15 to the conduction chamber 2 in the partition 11.
1, the conductive pin 13 and the conductive contact 13 are trapped and accumulated, and there is a fear of poor contact between the conductive pin 14 and the conductive contact 13 and heat generation.

If the conducting pins 14 are provided at the end of the extension pipes 6 and 7 on the side of the suction port 4, that is, the end on the power supply side, and the pin insertion port 15 is provided at the end of the side of the cleaner main body 1, the suction port will Body 4
And remove dust from the extension tubes 6 and 7
However, in this case, there is a risk of short circuit because the conductive pin 14 is exposed.

The extension pipe for a vacuum cleaner according to the present invention has been made in view of such a problem. Even when the use of only the extension pipe is continued, dust is not collected at the power supply connection portion of the extension pipe. It is intended to provide an extension tube for use.

[0009]

In order to solve the above-mentioned problems, a vacuum cleaner according to a first aspect of the present invention comprises a suction unit for collecting dust from a vacuum cleaner main body through at least one or more extension pipes. The mouth can be connected and connected, and
The above-mentioned extension pipe and suction port body are provided with wiring that can be electrically connected to the power supply unit of the vacuum cleaner main body, and each of the extension pipes or the extension pipe and the suction port body are detachably connected to each other. The ends are connected to each other, and the connection end of the extension pipe on the suction port side or the side near the suction port is a connection end on the power receiving side, and an insertion cylinder is provided. A detachable engaging concave portion is formed on the outer peripheral surface of the insertion tube portion, and an extension pipe connected to a portion closer to the vacuum cleaner main body among the connection end portions is a connection end portion on the power supply side. In addition, an insertion member of the insertion tube portion is formed, and an engaging member that advances and retreats from an opening and engages with the engagement concave portion is disposed on a peripheral wall portion of the insertion port of the power supply side connection end, A partition for holding a base of a pair of conductive pins connected to a terminal of the power receiving side wiring at a connection end of the power receiving side. The ends of the pair of conductive pins protrude from the power receiving side partition to the power supply side connection end, and the power supply side connection end is connected to a terminal of the power supply side wiring. A partition wall portion for holding a conductive contact that comes into contact with the pair of conductive pins is protruded, and a pair of pin insertion holes for inserting the pair of conductive pins are formed in the partition wall portion on the power supply side. In the vacuum cleaner, a communication port that communicates with an insertion port for an insertion cylinder at a connection end on the power receiving side is opened at a bottom of the partition wall on the power supply side.

[0010] The vacuum cleaner according to claim 2 of the present invention comprises:
2. The vacuum cleaner according to claim 1, wherein the communication port has a larger area than the pin insertion port.

[0011] Further, a vacuum cleaner according to claim 3 of the present invention is the vacuum cleaner according to any one of claims 1 and 2, wherein the communication port is provided at a substantially central portion between the pair of contacts. Features.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a vacuum cleaner according to a preferred embodiment of the present invention will be described with reference to the drawings.

In this embodiment, the structure other than the connection ends of the vacuum cleaner main body 1, the hose 2, the hand operation unit 3, the suction port 4, and the extension pipes 6, 7 is the same as the conventional one. Description will be made using the same reference numerals.

In this vacuum cleaner, a hose is connected to a suction port of a built-in vacuum cleaner main body 1, and two extension pipes 6 and 7 are connected to a distal end of a hand operation unit 3 of the hose 2.
A suction port 4 having a rotary brush driven by a motor is connected to a tip of the extension pipe 7. The extension pipe 7 and the suction port 4 are detachably connected by an engagement button 17. ing. The engagement between the extension tubes 6 and 7 and between the extension tube 6 and the hand operation unit 3 is also performed by the engagement button 17.

[0015] The connection ends of the object of the present invention include:
Extension tubes 6 and 7, Extension tube 6 and hand operation unit 3, Extension tube 7
It can be applied to the ends of the respective connection portions of the suction port body 4 and the suction port body 4. The operation part 3 of the hose 2 and the extension pipe 6, each of the extension pipes 6 and 7,
Further, at the connection end between the extension pipe 7 and the suction port body 4, the side provided on the suction port body 4 side is the power receiving side, and the portion provided on the cleaner body 1 side is the power supply side. .

In this embodiment, a connection end between the extension pipes 6 and 7 will be described.

A suction port 4 for dust collection can be connected to the vacuum cleaner main body 1 via a hose 2 and at least one or more extension pipes 6 and 7, and these hoses 2 and
The hand operation unit 3, the extension pipes 6 and 7, and the suction port 4 are provided with wiring 12 that can be electrically connected to the power supply unit of the vacuum cleaner main body 1.

A connection end (not shown) of the extension pipe 6 on the cleaner body 1 side and a connection end 7A of the extension pipe 7 on the cleaner body 1 side are connection ends on the power receiving side. And an insertion tube portion 9 is provided for each. In the extension pipes 6 and 7, the connection end 6A on the suction port 4 side (the suction port 4 side of the extension pipe 7 is not shown) is a connection end on the power receiving side, and is connected to the connection end 6A. Has an insertion opening 10 into which the insertion tube portion 9 is fitted. An engaging recess 16 for attachment and detachment is formed on the outer peripheral surface of the insertion tube portion 9.

An opening 18 is provided in the peripheral wall of the insertion port 10 of the connection end 6A, which is the power supply side between the connection ends 6A and 7A. An engaging button 17 as an engaging member that engages with the engaging concave portion 16 of the insertion tube 9 is provided in the opening 18 for attachment and detachment.

Connection end 7 of extension tube 7 having insertion tube 9
A is provided with a partition wall portion 22 (see FIG. 5) on the power receiving side where the power receiving side terminal of the wiring 12 is disposed. The connection end 6A of the extension tube 6 having the insertion port 10 is provided with a partition wall 11 on the power supply side where the power supply side terminal of the wiring 12 is disposed. A pair of conductive pins 14, 14, which are connected to terminals of the wiring 12 and protrude toward the partition 11 on the power supply side, protrude from the vertical wall 22 </ b> A of the partition 22 on the extension pipe 7 side, which is the power receiving side. ing.

A pair of pin insertion holes 1 for inserting a pair of conductive pins 14, 14 are provided in the partition 11 on the side of the extension pipe 6 on the power supply side.
5 and 15 are formed. This pin insertion port 15, 15
A pair of conductive pins 1 is provided in a conductive chamber 21 provided
A pair of conductive contacts 13, 13 that can be in contact with and conductive to 4 and 14 are provided. An insertion port 10 for the insertion tube 6 at the connection end 7A on the power receiving side is provided at the bottom of the partition 11 of the extension pipe 6 on the power feeding side.
A communication port 23 communicating with the communication port is opened.

The communication port 23 is opened at the bottom of the conduction chamber 21 at an intermediate position between the pair of conduction contacts 13. In this embodiment, a rib 24 for holding the conduction pins 14, 14 and guiding the up and down movement of the engagement button 17 is provided on the opposite sides of the pair of conduction contacts 13, 13. , 24, a pin insertion port 15 at the upper end,
A notch 25 is formed in a portion closer to 15.

Since the notch 25 is formed near the pin insertion ports 15, and the communication port 23 is opened between the ribs 24, 24, dust enters from the pin insertion ports 15, 15. Even immediately from the communication port 23, the communication air path A
Sent to be eliminated. The communication port 23 has a larger area than the pin insertion port 15, and the flow velocity of the pin insertion port 15 is faster. The communication port 23 may be provided at a position on the opposite side of the contact surface 13A of the conductive contact 13 that contacts the conductive pin 14.

According to the vacuum cleaner of this embodiment, for example, the suction port 4 is removed from the extension pipes 6 and 7,
In the case of cleaning with only the port 7, the negative pressure from the port 10 communicating with the communication air passage A of the extension pipes 6 and 7 causes
5, even if dust enters the conduction chamber 21 of the partition 11 on the power supply side, the dust is sucked from the communication port 23 provided in the partition 11 and flows into the communication air passage A.
Dust can be prevented from accumulating in the interior of the device 1 and poor conduction and generation of dust can be prevented. Furthermore, since the area of the communication port 23 is larger than the area of the pin insertion ports 15, 15, the flow velocity of the air passing through the pin insertion ports 15, 15 is high,
Dust is less likely to be caught on the pin insertion openings 15, 15. Since the communication port 23 is provided at a substantially central portion between the pair of conductive contacts 13, dust is prevented from being unevenly distributed to any one of the pair of contacts, and only one of the conductive contacts 13 is prevented from being poor in conduction. Is done.

[0025]

According to the vacuum cleaner of the first aspect of the present invention, for example, when the suction port is removed from the extension pipe and cleaning is performed only with the extension pipe, the detachable opening communicating with the ventilation passage of the extension pipe. Due to the negative pressure, even if dust enters into the partition wall on the power supply side from the pin insertion port into which the conduction pin is inserted, it is possible to prevent the dust from being sucked in from the communication port provided in the partition and stored in the partition. This can prevent conduction failure.

According to the vacuum cleaner of claim 2 of the present invention,
Since the area of the communication port is larger than the area of the pin insertion port, the flow velocity of air passing through the pin insertion port is high, so that dust is less likely to be caught on the pin insertion port.

According to the vacuum cleaner of claim 3 of the present invention,
Since the communication port is provided at a substantially central portion between the pair of contacts, dust is prevented from being unevenly distributed to any of the pair of conductive contacts, and conduction failure is prevented only in one of the contacts.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a connection end of an extension pipe on a power supply side of a vacuum cleaner according to an embodiment of the present invention.

FIG. 2 is a plan sectional view of a connection end of an extension pipe on the power supply side in FIG. 1;

FIG. 3 is a perspective view of a conventional vacuum cleaner.

FIG. 4 is a partial perspective view of the vacuum cleaner of FIG. 3 with extension tubes removed.

FIG. 5 is a cross-sectional view showing a structure of connecting portions of extension pipes of a conventional vacuum cleaner.

FIG. 6 is a partial plan view showing a contact state of a conductive contact and a conductive pin of a conventional vacuum cleaner.

[Explanation of symbols]

 Reference Signs List 6 Extension tube on power supply side 7 Extension tube on power reception side 9 Insertion tube part 10 Insertion port 11 Partition wall part 12 Wiring 13 Conduction contact 14 Conduction pin 15 Pin insertion port 16 Engagement recess 17 Engage button 18 Opening 21 Conduction chamber 22 Partition Part 23 Communication port 24 Rib 25 Notch

Claims (3)

[Claims] A suction port for collecting dust can be connected to the vacuum cleaner body via at least one or more extension pipes, and the one or more extension pipes and the suction port are provided with: The power supply unit of the vacuum cleaner main body is connected to a power supply line, and the extension pipes are connected to each other, or at least one of the extension pipes and the suction port body is connected to each other by detachable connection ends. The connection end of the extension pipe on the suction port side or the side near the suction port among the connection ends is a connection end on the power receiving side, and an insertion tube is provided. A detachable engaging recess is formed on the surface, and of the connection ends, an extension tube connected to a side closer to the main body of the vacuum cleaner is a connection end on the power supply side, and the insertion tube is inserted into the insertion tube. An opening is formed on the peripheral wall of the insertion port at the connection end on the power supply side. An engaging member that retreats and engages with the engaging concave portion is provided, and a partition portion that holds a base portion of a pair of conductive pins connected to a terminal of the power receiving side wiring is provided at the connection end portion on the power receiving side. The ends of the pair of conductive pins project from the partition on the power receiving side to the connection end on the power supply side, and the connection end on the power supply side is connected to a terminal of the power supply side wiring. A partition wall portion that holds a conductive contact that contacts the pair of conductive pins is protruded, and the partition wall portion on the power supply side includes:
A vacuum cleaner in which a pair of pin insertion ports for inserting the pair of conductive pins is formed, wherein at the bottom of the power supply side partition wall, an insertion port for an insertion cylinder portion of a power receiving side connection end. An electric vacuum cleaner, wherein a communication port for communication is opened. 2. The vacuum cleaner according to claim 1, wherein said communication port has a larger area than said pin insertion port. 3. The vacuum cleaner according to claim 1, wherein the communication port is provided at a substantially central portion between the pair of contacts.